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Analog Devices Inc. ADP1974ARUZ-R7
- Part No.:
- ADP1974ARUZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADP1974ARUZ-R7.pdf
- Description:
- IC REG CTRLR BUCK 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:985
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Product details
Overview
ADP1974ARUZ-R7 from Analog Devices is a bidirectional, synchronous PWM controller designed for battery test and formation systems. It operates in buck mode for charging and boost mode for discharging/recycling energy, supports 6 V to 60 V input, integrates a 5 V linear regulator, and features programmable frequency (50–300 kHz), dead time, maximum duty cycle, and soft start. It interfaces directly with AD8450/AD8451 analog front-ends in high-efficiency battery conditioning equipment.
For engineers reviewing the ADP1974ARUZ-R7 datasheet, ADP1974ARUZ-R7 pinout, ADP1974ARUZ-R7 application, or ADP1974ARUZ-R7 equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, and two confirmed alternative parts - all grounded in the Rev. 0 datasheet and Analog Devices' official documentation.
Technical Context
The ADP1974ARUZ-R7 implements constant-frequency, voltage-mode PWM control using an internal 4 Vp-p ramp generator synchronized to COMP input. Its dual-mode operation is latched at EN or FAULT rising edges, enforcing strict buck/boost separation via MODE pin logic thresholds (1.20 V rising / 1.05 V falling).
It integrates precision enable (EN threshold hysteresis ~0.18 V), UVLO (5.71 V rise / 5.34 V fall), peak hiccup current limiting with configurable CL pin sensing (300 mV buck / 500 mV boost thresholds), and thermal shutdown (150°C trip). All drive outputs (DH/DL) are 5 V logic-level, compatible with isolated gate drivers like ADuM7223.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6 V to 60 V - enables direct connection to industrial DC bus (e.g., 24 V, 48 V) without auxiliary supply rails. |
| Switching Frequency | 50 kHz to 300 kHz - adjustable via external resistor on FREQ pin; supports layout optimization and EMI management. |
| Internal Ramp Voltage | 4 Vp-p - defines linear PWM duty-cycle scaling against COMP input; ensures predictable voltage-mode loop response. |
| VREG Output | 5.0 V ±2% (4.9 V–5.1 V) - powers internal circuitry and serves as stable bias reference for MODE, FAULT, DMAX, and SYNC pins. |
| Thermal Shutdown | 150°C trip / 135°C release - protects against sustained overload or poor PCB thermal design without requiring external sensors. |
| Current Limit Thresholds | Buck: 300 mV (typ), Boost: 500 mV (typ) - sets precise peak inductor current detection points for charge/discharge safety margins. |
| Soft Start Threshold | 0.52 V rising / 0.4 V falling - controls startup ramp timing via external capacitor; prevents inrush into battery or output capacitance. |
Pinout & Package
ADP1974ARUZ-R7 is housed in a 16-lead TSSOP package (4.4 mm × 5.0 mm, 0.65 mm pitch) with exposed pad for thermal enhancement. Pin 15 (GND) serves as both power and analog ground reference; thermal pad must be soldered to PCB ground plane per Analog Devices layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DL | Low-side MOSFET driver output | 5 V logic-level signal driving external half-bridge low-side gate; synchronized with DH and dead-time controlled. |
| DH | High-side MOSFET driver output | 5 V logic-level signal driving external half-bridge high-side gate; phase relationship with DL defines buck/boost topology. |
| VREG | Integrated 5 V LDO output | Provides regulated bias for internal circuitry and external pull-ups; requires ≥1 μF ceramic bypass to GND. |
| VIN | Main high-voltage supply input | Accepts 6–60 V DC; powers internal regulator and logic; requires ≥4.7 μF ceramic bypass to GND. |
| MODE | Buck/boost mode select input | Logic-high (>1.20 V) = buck (charge); logic-low (<1.05 V) = boost (discharge); latched at EN/FAULT rising edge. |
| COMP | PWM modulator error amplifier input | Receives CV/CC error signal from AD8450/AD8451; compared internally to 4 Vp-p ramp to generate duty cycle. |
| FAULT | External fault disable input | Active-low signal that forces DH/DL low; resets mode latch and disables switching during OCP/OVP events. |
| SS | Soft start timing control | Capacitor-to-ground sets ramp time; <0.5 V disables switching; >4.5 V enables full synchronous operation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional dc-dc control | Enables single-controller battery formation systems: buck for charging, boost for energy-recycling discharge. |
| Programmable dead time | Resistor on DT pin sets non-overlap between DH/DL transitions (e.g., 100 ns to 175 ns), preventing shoot-through in external FETs. |
| Synchronization I/O | SYNC pin configurable as input (slave) or output (master) with programmable phase shift - enables multi-channel coherent operation. |
| Peak hiccup current limit | Auto-retry protection triggered by 500 consecutive overcurrent pulses; 5.2 ms hiccup off time limits average power dissipation. |
| Pin compatibility with ADP1972 | Shares identical 16-lead TSSOP footprint and core pinout with asynchronous ADP1972 - simplifies upgrade path where synchronous rectification is added. |
Applications
| Battery Formation System | Energy-Recycling Test Rack |
|---|---|
|
Use Scenario: Precision cycling of Li-ion cells during manufacturing to stabilize SEI layer and calibrate capacity. IC Role / Device Role / Timing Role: Synchronous PWM controller managing bidirectional power flow between DC bus and cell stack via external half-bridge driver. Use Value: Enables >90% round-trip efficiency in discharge-to-bus energy recovery, reducing grid draw and thermal load in multi-channel racks. |
Use Scenario: High-density 48 V battery pack testing with simultaneous charge/discharge across multiple channels. IC Role / Device Role / Timing Role: Master-synchronized controller coordinating phase-shifted switching across parallel ADP1974ARUZ-R7 units to minimize input ripple. Use Value: Reduces input capacitor requirements by 40% vs. unsynchronized operation, lowering BOM cost and board area. |
| AD8450/AD8451-Based AFE Platform | Industrial Battery Conditioning Unit |
|
Use Scenario: Modular battery tester integrating Analog Devices' analog front-end (AD8450) and PWM controller (ADP1974ARUZ-R7). IC Role / Device Role / Timing Role: COMP and FAULT interface pins provide seamless analog loop closure and fault propagation between AFE and controller. Use Value: Eliminates need for level-shifting or isolation between error amplifier and PWM stage - preserves loop bandwidth and accuracy. |
Use Scenario: DIN-rail mounted 24 V battery maintenance system for telecom backup or UPS conditioning. IC Role / Device Role / Timing Role: Core timing and drive controller enabling programmable CC/CV profiles, soft-start sequencing, and thermal-safe shutdown. Use Value: Supports field-upgradable firmware-defined charge algorithms via external microcontroller control of MODE, COMP, and EN. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP1972ARUZ-R7 | Asynchronous version; lacks internal synchronous rectification control; uses external diode instead of low-side FET in buck mode. | Lower efficiency in charge mode (~85% vs. ~94%); suitable only where recycle capability is not required. | Select ADP1972ARUZ-R7 if system cost sensitivity outweighs energy recovery needs and thermal constraints allow higher losses. |
| LTC3780EFE#PBF | Wide-input (4–36 V), synchronous buck-boost controller with integrated gate drivers; no separate VREG output or COMP interface for external AFE. | Self-contained solution for lower-voltage battery systems; incompatible with AD8450/AD8451 analog loop architecture. | Choose LTC3780EFE#PBF when designing new compact battery testers without legacy AFE integration or >36 V input requirements. |
Compared with ADP1974ARUZ-R7, ADP1972ARUZ-R7 sacrifices synchronous efficiency for cost reduction, while LTC3780EFE#PBF trades AFE interoperability and 60 V headroom for monolithic integration - making ADP1974ARUZ-R7 uniquely suited for high-voltage, AFE-coupled, energy-recycling battery formation.
Availability
ADP1974ARUZ-R7 is available at Aetrix Electronics and suitable for battery formation systems, energy-recycling test racks, AD8450/AD8451-based AFE platforms, and industrial battery conditioning units requiring stable component supply across long production lifecycles.
Supply support for ADP1974ARUZ-R7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADP1974ARUZ-R7 belongs to Analog Devices' battery test and formation controller product line, engineered specifically for high-accuracy, high-efficiency bidirectional power conversion in automated cell manufacturing and validation equipment.
FAQ
What is the primary function of the ADP1974ARUZ-R7 in battery test systems?
The ADP1974ARUZ-R7 serves as a bidirectional synchronous PWM controller that manages energy flow between a DC bus and battery under test - operating in buck mode for precise charging and boost mode for energy-recycling discharge. Its COMP and FAULT interfaces are optimized for direct coupling with AD8450/AD8451 analog front-ends, enabling closed-loop CV/CC control without additional signal conditioning. This makes ADP1974ARUZ-R7 essential for high-fidelity battery formation and aging validation.
Can the ADP1974ARUZ-R7 operate without the AD8450/AD8451 analog front-end?
Yes, the ADP1974ARUZ-R7 can operate without AD8450/AD8451, but its COMP pin must be driven by another error amplifier meeting its input specifications: 0 V to 5.0 V range, low output impedance, and sufficient bandwidth to track the internal 4 Vp-p ramp. The FAULT pin also remains functional for external fault signaling. However, ADP1974ARUZ-R7's full design value - including seamless CV/CC transition, fast transient response, and integrated fault coordination - is realized only when paired with AD8450/AD8451 as specified in the datasheet.
How does the MODE pin determine buck versus boost operation in the ADP1974ARUZ-R7?
The MODE pin on the ADP1974ARUZ-R7 is sampled at the rising edge of EN or FAULT to latch the operating mode: logic-high (>1.20 V) selects buck (charge) mode, where DH initiates conduction; logic-low (<1.05 V) selects boost (discharge) mode, where DL initiates conduction. Once latched, the mode cannot be changed until EN or FAULT is toggled low. This hardware-enforced separation prevents unintended topology switching during active regulation - a critical safety feature in battery formation where misconfigured polarity could damage cells.
What is the purpose of the SCFG pin on the ADP1974ARUZ-R7, and how is it configured?
The SCFG pin on the ADP1974ARUZ-R7 configures the SYNC pin's direction and phase behavior: >4.53 V sets SYNC as master clock output; <4.25 V sets SYNC as slave input; 0.52 V–4.53 V introduces programmable phase delay (e.g., 100 kΩ yields ~150 µs delay). If left floating, SCFG defaults to VREG, configuring SYNC as output. This flexibility allows ADP1974ARUZ-R7 to synchronize multiple channels coherently - essential for reducing input ripple in multi-unit battery test racks.
Does the ADP1974ARUZ-R7 require external components for basic operation, and which ones are mandatory?
Yes, the ADP1974ARUZ-R7 requires several mandatory external components: a 4.7 µF ceramic capacitor from VIN to GND; a 1 µF ceramic capacitor from VREG to GND; a soft-start capacitor from SS to GND; and resistors on FREQ, DMAX, DT, and CL pins to set frequency, max duty cycle, dead time, and current limit thresholds. The MODE, EN, and FAULT pins may be tied directly to logic levels or pulled via resistors. Omitting the VREG or VIN bypass capacitors risks instability or latch-up per the datasheet layout guidelines.
ADP1974ARUZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 6V ~ 60V
- Frequency - Switching:
- 50kHz ~ 300kHz
- Duty Cycle (Max):
- 97%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- Yes
- Serial Interfaces:
- -
- Control Features:
- Current Limit, Dead Time Control, Enable, Frequency Control, Soft Start
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
ADP1974ARUZ-R7 FAQ
1.How can I place an order for ADP1974ARUZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1974ARUZ-R7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADP1974ARUZ-R7 reliable?
The price and inventory of ADP1974ARUZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1974ARUZ-R7 is usually 5 days.
3.What payment methods are accepted for ADP1974ARUZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1974ARUZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1974ARUZ-R7?
ADP1974ARUZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1974ARUZ-R7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADP1974ARUZ-R7?
For technical support, including ADP1974ARUZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1974ARUZ-R7 requirements.
6.How does Aetrix verify that ADP1974ARUZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADP1974ARUZ-R7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADP1974ARUZ-R7 meets industry standards.
7.What is the process for return or replacement of ADP1974ARUZ-R7?
All ADP1974ARUZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1974ARUZ-R7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADP1974ARUZ-R7 part is unused and in its original packaging.
Return procedure for ADP1974ARUZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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