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AD8452ASTZ-RL

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IC AFE/PWM CONTROLLER 48-LQFP

Part Number: AD8452ASTZ-RL

Manufacturer: Analog Devices Inc.

Category: Specialized ICs

Package: 48-LQFP

Datasheet:: AD8452ASTZ-RL.pdf

Description: IC AFE/PWM CONTROLLER 48-LQFP

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

AD8452ASTZ-RL Precision Integrated Analog Front End, Controller, and PWM for Battery Test and Formation Systems

A comprehensive technical overview of the AD8452ASTZ-RL, a precision integrated analog front-end, controller, and PWM driver from Analog Devices for battery test and formation systems. Covers device function, core features, electrical specifications, 48-lead LQFP package, pin configuration, typical applications, and replacement selection guidance.

Analog Devices 48-Lead LQFP (ST-48) 6V to 60V PWM Supply

Device Classification Precision Integrated AFE, Controller, and PWM Driver

Part Number: AD8452ASTZ-RL

Mounting Type: Surface Mount

Operating Temperature Range: -40°C to +85°C

PRODUCT OVERVIEW

What Is the AD8452ASTZ-RL?

AD8452ASTZ-RL is a precision integrated analog front-end, controller, and switch mode power supply (SMPS) pulse-width modulator (PWM) driver from Analog Devices, combining all three functions into a single silicon platform for high volume battery testing and formation manufacturing.[reference:0]

The device features a precision instrumentation amplifier (in-amp) that measures battery charge/discharge current, and an equally accurate difference amplifier that measures battery voltage. Internal laser trimmed resistor networks establish the in-amp and difference amplifier gains (66 V/V and 0.4 V/V, respectively), stabilizing performance across the rated operating temperature range.[reference:1]

Switching between constant current (CC) and constant voltage (CV) loop integration is instantaneous, automatic, and completely transparent to the observer. A logic high at the MODE input selects the charge or discharge mode (high for charge, low for discharge). The AD8452ASTZ-RL simplifies designs by providing excellent performance, functionality, and overall reliability in a space saving 48-lead, 7 mm × 7 mm × 1.4 mm LQFP package rated for operation at temperatures from −40°C to +85°C.[reference:2]

Integrated AFE + Controller + PWM Combines precision analog front-end, CC/CV loop control, and SMPS PWM driver in a single 48-lead LQFP package.

Precision Measurement Factory trimmed in-amp (66 V/V) and difference amplifier (0.4 V/V) with offset drift <0.6 µV/°C and gain drift <3 ppm/°C.

Automatic CC/CV Switchover Transparent and instantaneous transition between constant current and constant voltage modes for battery formation.

DEVICE HIGHLIGHTS

Key Features and Benefits of AD8452ASTZ-RL

CC and CV Battery Test & Formation Modes

Constant current and constant voltage battery test and formation modes with transparent and automatic switchover, for systems of 20 Ah or less.[reference:3]

Precision Measurement & Stability

Highly accurate, factory trimmed instrumentation and differential amplifiers. Offset voltage drift <0.6 µV/°C (maximum) and gain drift <3 ppm/°C (maximum).[reference:4]

Popular SMPS Control & High PWM Linearity

Popular SMPS control for charge/discharge with high PWM linearity using internal ramp voltage.[reference:5]

Flexible Switching Frequency & Synchronization

User controlled switching frequency from 50 kHz to 300 kHz. Synchronization output or input with adjustable phase shift.[reference:6]

Wide Input Voltage Range

Analog supply voltage up to 36 V (AVCC − AVEE) and PWM supply voltage up to 61 V (VIN − DGND).[reference:7]

Compact 7mm × 7mm LQFP Package

Available in a space-saving 48-lead, 7 mm × 7 mm × 1.4 mm LQFP package with a wide −40°C to +85°C operating temperature range.[reference:8]

REFERENCE DATA

Technical Specifications for AD8452ASTZ-RL

Part Number	AD8452ASTZ-RL	Manufacturer	Analog Devices
Device Type	Precision Integrated AFE, Controller, and PWM Driver	Package	48-Lead LQFP (ST-48)
Package Body Size	7.00 mm × 7.00 mm × 1.40 mm	Mounting Type	Surface Mount
Analog Supply Voltage (AVCC − AVEE)	36 V Maximum	PWM Supply Voltage (VIN − DGND)	−0.3 V to +61 V[reference:9]
In-Amp Gain	66 V/V[reference:10]	Difference Amplifier Gain	0.4 V/V[reference:11]
Offset Voltage Drift	<0.6 µV/°C (Maximum)[reference:12]	Gain Drift	<3 ppm/°C (Maximum)[reference:13]
Current Sense CMRR	120 dB Minimum[reference:14]	Internal Reference Voltage	2.5 V[reference:15]
Switching Frequency	50 kHz to 300 kHz (User Controlled)[reference:16]	Thermal Resistance θJA	81 °C/W[reference:17]
Internal LDO Output	5 V[reference:18]	Storage Temperature Range	−65°C to +150°C[reference:19]
Operating Temperature	−40°C to +85°C[reference:20]	ESD Caution	Standard ESD Sensitive Device
Packaging	Tape & Reel (RL)	RoHS	Yes (Z Suffix)

Electrical values shown above are reference values. Test conditions, limits, and guaranteed performance should always be confirmed from the current official manufacturer datasheet before design or production use.

DESIGN REFERENCE

Circuit Considerations for AD8452ASTZ-RL

Operation & Configuration

The AD8452ASTZ-RL integrates analog front-end, CC/CV control, and PWM driver in a single device:

Current Sense: Precision in-amp (66 V/V) measures charge/discharge current via external shunt resistor[reference:21]
Voltage Sense: Difference amplifier (0.4 V/V) measures battery voltage[reference:22]
CC/CV Control: Instantaneous and automatic switchover between constant current and constant voltage modes[reference:23]
Mode Selection: MODE pin selects charge (high) or discharge (low) mode[reference:24]
PWM Control: Popular SMPS control with 50 kHz to 300 kHz user-controlled switching frequency[reference:25]
Frequency Synchronization: SYNC pin allows synchronization output or input with adjustable phase shift[reference:26]

PCB and Power-Supply Guidance

Battery test system performance depends on layout, bypassing, and component selection:

Analog Supply: AVCC and AVEE supply the analog front-end (AVCC − AVEE ≤ 36 V)[reference:27]
PWM Supply: VIN supplies the PWM section, typically the same as the output switch supply voltage[reference:28]
Internal Regulator: VREG provides 5 V bias; connect a 1 µF bypass capacitor from VREG to ground[reference:29]
Frequency Setting: Connect an external resistor between FREQ and ground to set frequency from 50 kHz to 300 kHz[reference:30]
Soft Start: Connect a capacitor from SS to ground to set the soft start ramp time[reference:31]
Dead Time: Connect an external resistor from DT to ground to program dead time[reference:32]
Thermal Management: θJA = 81 °C/W; ensure adequate PCB copper area for heat dissipation[reference:33]
Reference Bypass: Bypass VREF with a 10 nF NP0 ceramic capacitor in series with a 10 Ω resistor[reference:34]
Verify the recommended PCB footprint from the official datasheet before production

48-LEAD LQFP (ST-48)

Pin Configuration Reference for AD8452ASTZ-RL

AD8452

LQFP (ST-48) TOP VIEW

Confirm package orientation and pin numbering against the official package drawing before PCB layout. The ST-48 package has 48 pins with 0.5mm pitch.

1 ISREFH Reference Input for Current Sense Amplifier - Connect to VREF to shift output by 12.5 mV[reference:35]

2 ISREFL Reference Input for Current Sense Amplifier - Default connection to ground[reference:36]

3 ISREFLS Test Kelvin Sense Pin for ISREFL[reference:37]

4 ISVP Current Sense In-Amp Positive Input - High side of current sense shunt[reference:38]

5 ISVN Current Sense In-Amp Negative Input - Low side of current sense shunt[reference:39]

6 BVP Battery Voltage Diff-Amp Positive Input[reference:40]

7 BVPS Test Kelvin Sense Pin for BVP[reference:41]

8 BVN Battery Voltage Diff-Amp Negative Input[reference:42]

9 BVNS Test Kelvin Sense Pin for BVN[reference:43]

10 BVREFL Reference Input for Voltage Sense Diff-Amp - Default connection to ground[reference:44]

11 BVREFLS Test Kelvin Sense Pin for BVREFL[reference:45]

12 BVREFH Reference Input for Diff-Amp - Connect to VREF to level shift BVMEA[reference:46]

13 AVEE Analog Negative Supply Pin[reference:47]

14 VSET Scaled CV Loop Control Input for Battery Charge or Discharge Cycle[reference:48]

15 VVP0 Noninverting CV Loop Filter Amplifier Input for Discharge Mode[reference:49]

16 BVMEA Scaled Battery Voltage - Difference Amplifier Output[reference:50]

17 VSETB Buffered VSET Voltage[reference:51]

18 VVE0 Inverting Input of CV Loop Filter Amplifier - Discharge Mode[reference:52]

19 VVE1 Inverting Input of CV Loop Filter Amplifier - Charge Mode[reference:53]

20 VINT Aggregated Result of Battery Voltage and Current Sense Integration[reference:54]

21 AVEE Analog Negative Supply Pin[reference:55]

22 MODE Logic Input - High for Charge, Low for Discharge Mode[reference:56]

23 EN Logic Enable Input - Low shuts down, High turns on device[reference:57]

24 FAULT External Fault Comparator Connection - Disables DH/DL when low[reference:58]

25 CLFLG Current-Limit Flag - Open-drain, active low output[reference:59]

26 SYNC Clock Synchronization I/O - For phase interleaving multiple channels[reference:60]

27 SCFG Synchronization Configuration Pin[reference:61]

28 VREG Internal 5V LDO Regulator Output - Bypass with 1 µF capacitor[reference:62]

29 VIN PWM Section Supply Voltage - Typically same as output switch supply[reference:63]

30 DL Logic Drive Output for External Low-Side MOSFET Driver[reference:64]

31 DH Logic Drive Output for External High-Side MOSFET Driver[reference:65]

32 DGND Digital and PWM Ground[reference:66]

33 DT Dead Time Programming - External resistor to ground[reference:67]

34 SS Soft Start Control - Capacitor to ground sets ramp time[reference:68]

35 DMAX Maximum Duty Cycle Input - Resistor to ground sets DMAX[reference:69]

36 FREQ Frequency Set - Resistor to ground sets 50–300 kHz[reference:70]

37 CLVT Current-Limit Voltage Threshold - User selected resistor[reference:71]

38 CLP Current-Limit/Diode Emulation Amplifier Positive Sense[reference:72]

39 CLN Current-Limit/Diode Emulation Amplifier Negative Sense[reference:73]

40 AVCC Analog Positive Supply Pin[reference:74]

41 VINT Aggregated Result of Battery Voltage and Current Sense Integration[reference:75]

42 IVE1 Inverting Input of CC Loop Filter Amplifier - Charge Mode[reference:76]

43 IVE0 Inverting Input of CC Loop Filter Amplifier - Discharge Mode[reference:77]

44 ISMEA Current Sense Instrumentation Amplifier Output[reference:78]

45 ISET Scaled CC Voltage Loop Control Input[reference:79]

46 AVCC Analog Positive Supply Pin[reference:80]

47 AGND Analog Ground[reference:81]

48 VREF 2.5 V Reference Output - Bypass with 10 nF NP0 + 10 Ω series resistor[reference:82]

APPLICATION AREAS

Typical Applications for AD8452ASTZ-RL

Battery Formation and Testing

High volume battery manufacturing formation and testing systems with precision CC/CV control.[reference:83]

High Efficiency Battery Test Systems

Battery test systems with recycle capability for energy-efficient operation.[reference:84]

Battery Conditioning Systems

Charging and discharging systems for battery conditioning and cycling.[reference:85]

Electric Vehicle Battery Testing

Precision battery testing for EV and hybrid vehicle battery packs.

Industrial Battery Manufacturing

High-volume industrial battery production test and formation equipment.

Laboratory Battery Test Equipment

Research and development battery cyclers and test systems.

REPLACEMENT GUIDANCE

Selecting an Alternative for AD8452ASTZ-RL

A replacement for the AD8452ASTZ-RL should not be selected only by product category. The electrical characteristics, package, and pin configuration must be evaluated against the actual circuit requirements.

Integrated AFE + Controller + PWM

In-amp gain (66 V/V) and diff-amp gain (0.4 V/V)

Offset drift (<0.6 µV/°C) and gain drift (<3 ppm/°C)

Switching frequency range (50 kHz–300 kHz)

Analog supply (36 V max) and PWM supply (61 V max)

Package (48-lead LQFP, 7mm × 7mm)

Operating temperature (−40°C to +85°C)

Automatic CC/CV switchover capability

Family alternatives: AD8450 (previous generation, different pinout and specifications), AD8452ASTZ (tube packaging, same electrical specs). For systems requiring higher current capability, consider external MOSFET driver configurations. Select based on package, packaging needs, and system requirements.

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MANUFACTURER INFORMATION

Analog Devices

The AD8452 (AD8452ASTZ-RL) belongs to the battery test and formation system portfolio of Analog Devices. The device combines a precision analog front-end, controller, and SMPS PWM driver into a single silicon platform for high volume battery testing and formation manufacturing.[reference:86]

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Technical Information Disclaimer

This technical guide is provided for product identification and preliminary reference only. Electrical limits, package dimensions, pin configuration, product status, and application suitability must be verified using current official manufacturer documentation before design, procurement, or production.

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Specifications

Product Attribute: Attribute Value

Part Number: AD8452ASTZ-RL

Manufacturer: Analog Devices Inc.

Package: 48-LQFP

Series: -

Package/Case: 48-LQFP

Packaging: Tape & Reel (TR)

Product Status: Active

Programmable: Not Verified

Type: AFE/PWM Controller

Applications: Battery Test/Formation Systems

Mounting Type: Surface Mount

Supplier Device Package: 48-LQFP (7x7)

Grade: -

Qualification: -

Frequently Asked Questions

1. How can I order AD8452ASTZ-RL from Haishengye Electronics?

Submit an RFQ directly on this page with your required quantity, target price and delivery requirements. Our sales team will review the request and provide a quotation.

2. How does Haishengye Electronics verify the quality of AD8452ASTZ-RL?

We work with qualified suppliers and review sourcing channels, traceability, packaging and product condition before shipment.

3. Are the stock and price of AD8452ASTZ-RL updated in real time?

Electronic component inventory and prices may change frequently. Displayed values are references, and final stock and pricing will be confirmed in the quotation.

4. Which payment methods are supported?

Wire Transfer, PayPal, Alipay, WeChat, Credit Card, Western Union, MoneyGram and Escrow may be supported depending on the order and destination.

5. How is international shipping arranged?

International shipping may be arranged through DHL, UPS, FedEx, TNT and other logistics channels. Tracking information will be provided after shipment.

6. What is the return or replacement process for AD8452ASTZ-RL?

Contact our sales team within the agreed period if there are quantity differences, incorrect items or clear external defects. Products should remain unused and in their original packaging.

7. Can I request technical support for AD8452ASTZ-RL?

Yes. Contact our team for datasheets, package details, product specifications, alternative parts and sourcing assistance.

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AD8452ASTZ-RL Procurement and Technical Support

AD8452ASTZ-RL is manufactured by Analog Devices Inc.. This page provides purchasing information including manufacturer, category, package, datasheet, stock reference, price reference and product specifications.

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Part Number: AD8452ASTZ-RL

Manufacturer: Analog Devices Inc.

Package: 48-LQFP

Category: Specialized ICs

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