My Inquiry
My Account
Analog Devices Inc. ADP2370ACPZ-2.5-R7
- Part No.:
- ADP2370ACPZ-2.5-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad, CSP
- Datasheet:
-
ADP2370ACPZ-2.5-R7.pdf
- Description:
- IC REG BUCK 2.5V 800MA 8LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,375
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADP2370ACPZ-2.5-R7 from Analog Devices is a fixed-output 2.5 V, 800 mA synchronous buck regulator operating from 3.2 V to 15 V input, featuring <14 µA quiescent current in power-saving mode, 1.2 MHz/600 kHz selectable switching frequency, and ±1% initial output accuracy. It delivers high efficiency (>90%) in portable battery-powered systems requiring stable low-noise voltage regulation.
For engineers reviewing the ADP2370ACPZ-2.5-R7 datasheet, ADP2370ACPZ-2.5-R7 pinout, ADP2370ACPZ-2.5-R7 application, or ADP2370ACPZ-2.5-R7 equivalent, key selection criteria include input voltage range compatibility (3.2–15 V), 2.5 V fixed output with tight initial tolerance, ultra-low IQ for extended battery life, and LFCSP-8 package thermal performance in space-constrained designs.
Technical Context
The ADP2370ACPZ-2.5-R7 employs a proprietary high-speed current-mode PWM control architecture with internal compensation and soft-start, enabling excellent transient response and stability without external loop components. Its synchronous rectifier eliminates external diode losses, while 100% duty-cycle capability supports low-dropout operation near VIN.
Frequency selection is implemented via the FSEL pin (high = 1.2 MHz, low = 600 kHz) or external synchronization (400–800 kHz or 0.8–1.6 MHz range). The device operates in either forced PWM (low noise) or automatic PSM/PWM mode (high light-load efficiency), with precision enable thresholds and open-drain power-good monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.2 V to 15 V - supports multi-cell alkaline/NiMH, single/dual Li-ion, and industrial 5–12 V rails. |
| Output Voltage | Fixed 2.5 V ±1% (initial) - eliminates external feedback resistors and ensures precise rail generation for ADC references or logic I/O. |
| Max Output Current | 800 mA - sufficient for powering microcontrollers, sensors, and RF front-ends in compact portable devices. |
| Quiescent Current | <14 µA in PSM mode - extends battery runtime in always-on, low-duty-cycle applications like AMR endpoints. |
| Switching Frequency | Selectable 600 kHz or 1.2 MHz - enables optimization of inductor size vs. efficiency and EMI profile. |
| Efficiency | >90% at 250 mA (VIN=7.2 V, VOUT=3.3 V) - confirmed across load and temperature; applies proportionally to 2.5 V output. |
| Shutdown Current | <1.2 µA - ensures minimal battery drain during system sleep or off-state. |
Pinout & Package
ADP2370ACPZ-2.5-R7 uses an 8-lead, 3 mm × 3 mm × 0.75 mm LFCSP (QFN) package with exposed thermal pad electrically connected to PGND. The pad must be soldered to a PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power Input | Primary DC input connection; accepts 3.2–15 V; requires local 10 µF ceramic decoupling. |
| FSEL (Pin 2) | Frequency Select | Logic-controlled selection: high = 1.2 MHz, low = 600 kHz; hysteresis prevents chatter. |
| EN (Pin 3) | Enable Input | Precision threshold (1.10–1.26 V high, 1.05–1.16 V low); enables/disables regulation with 70 µs delay. |
| SYNC (Pin 4) | Synchronization | Accepts external clock (400–1.6 MHz) or forces FPWM mode when held high; low enables auto PSM/PWM. |
| FB (Pin 5) | Feedback | Internally tied to 2.5 V output divider; not accessible in fixed-output variants - no external resistor required. |
| PG (Pin 6) | Power Good | Open-drain output asserting high when VOUT ≥ 92% of nominal (2.3 V); 20 µs rise/fall delay. |
| SW (Pin 7) | Switch Node | Connection to external inductor; carries high dv/dt switching waveform; requires tight layout and ground return. |
| PGND (Pin 8) | Power Ground | High-current return path for internal MOSFETs; must be connected directly to exposed pad and low-impedance ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | <14 µA in PSM mode enables >1-year battery life in 10 µA average-load IoT endpoints. |
| 100% duty cycle operation | Maintains regulation down to VOUT ≈ VIN − 0.3 V, critical for brownout resilience in Li-ion discharge profiles. |
| Integrated soft start | 350 µs controlled ramp prevents inrush current and input supply sag during power-up. |
| Internal compensation | Eliminates external compensation network, reducing BOM count and design validation effort. |
| Robust protection suite | Includes undervoltage lockout (UVLO: 3.19 V rise), thermal shutdown (150°C), short-circuit foldback, and overcurrent limiting. |
Applications
| Medical Instrumentation | Automatic Meter Reading (AMR) |
|---|---|
|
Use Scenario: Portable blood glucose meters and handheld pulse oximeters powered by coin cells or AAA batteries. IC Role / Device Role: Primary 2.5 V supply for analog front-end (AFE), ADC reference, and low-power MCU core. Use Value: Sub-14 µA quiescent current extends single-battery operation beyond 2 years; 2.5 V accuracy ensures ±0.5% ADC measurement fidelity. |
Use Scenario: Battery-operated smart gas/water meters transmitting data via NB-IoT or LoRaWAN every 15 minutes. IC Role / Device Role: Regulating 2.5 V for sensor biasing, RF transceiver I/O, and real-time clock (RTC) circuitry. Use Value: 600 kHz/1.2 MHz frequency select allows EMI tuning to avoid ISM band interference; UVLO prevents deep battery discharge. |
| Point-of-Sale Terminals | Medium-Format Display Tablets |
|
Use Scenario: Compact handheld POS terminals using dual AA or LiPo batteries with integrated barcode scanner and NFC. IC Role / Device Role: Stable 2.5 V rail for image sensor interface, secure element, and touch controller logic. Use Value: High efficiency (>90% at 250 mA) minimizes heat in sealed plastic enclosures; PG output enables firmware-controlled power sequencing. |
Use Scenario: Ruggedized industrial tablets with 7–10 inch displays, used in field service or warehouse logistics. IC Role / Device Role: Secondary 2.5 V supply for display timing controller, backlight driver logic, and interface buffers. Use Value: LFCSP-8 package (3 mm × 3 mm) saves PCB area versus SOIC alternatives; thermal resistance θJA = 36.7°C/W enables passive cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62840DRVR | 2.5 V fixed, 1.8 µA IQ, 1.8–6.5 V input, 1 A output, 2.25 MHz switching - lower IQ but narrower input range. | Better suited for single-cell Li-ion (2.7–4.5 V) or USB-powered devices; not viable for 12 V industrial inputs. | Select TPS62840DRVR only if input stays ≤6.5 V and sub-2 µA IQ is mandatory; ADP2370ACPZ-2.5-R7 remains preferred for wide-input flexibility. |
| MAX17552ATC+ | Adjustable output (0.8–15 V), 800 mA, 4.5–40 V input, 2.2 MHz, 15 µA IQ - wider input but no fixed 2.5 V option. | Requires external feedback resistors; better for multi-rail systems needing programmability, not drop-in 2.5 V replacement. | Choose MAX17552ATC+ when adjustable output or >15 V input is needed; ADP2370ACPZ-2.5-R7 offers simpler, optimized 2.5 V solution. |
Compared with TPS62840DRVR and MAX17552ATC+, the ADP2370ACPZ-2.5-R7 uniquely balances ultra-low IQ (<14 µA), wide 3.2–15 V input, fixed 2.5 V accuracy, and proven thermal performance in LFCSP - making it optimal for battery-backed industrial and medical devices where input voltage variability and long shelf life are critical.
Availability
ADP2370ACPZ-2.5-R7 is available at Aetrix Electronics and suitable for portable instrumentation, automatic meter reading (AMR), and point-of-sale terminals requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for ADP2370ACPZ-2.5-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 ADP2370/ADP2371 product line was designed specifically for space- and power-constrained portable and battery-powered applications demanding high efficiency, ultra-low quiescent current, and minimal external component count.
FAQ
What is the input voltage range supported by the ADP2370ACPZ-2.5-R7?
The ADP2370ACPZ-2.5-R7 supports an input voltage range of 3.2 V to 15 V. This allows direct operation from multiple alkaline/NiMH cells, single or dual Li-ion batteries, and standard industrial 5 V, 9 V, or 12 V rails. Operation below 3.2 V triggers undervoltage lockout (UVLO) at 3.19 V rising threshold, protecting downstream circuitry from unstable regulation.
Does the ADP2370ACPZ-2.5-R7 require external feedback resistors to set its output voltage?
No, the ADP2370ACPZ-2.5-R7 does not require external feedback resistors. It is a fixed-output variant with an internally trimmed 2.5 V regulator, meaning the FB pin is pre-connected to the internal voltage divider. This eliminates component count, layout sensitivity, and tolerance stacking errors associated with external resistor networks.
How does the ADP2370ACPZ-2.5-R7 manage efficiency at light loads?
The ADP2370ACPZ-2.5-R7 automatically enters Power Saving Mode (PSM) under light loads, reducing switching frequency to maintain high efficiency. In this mode, quiescent current drops to <14 µA. When noise sensitivity is critical, the SYNC pin can force continuous PWM operation - trading efficiency for predictable spectral content.
What thermal performance can be expected from the ADP2370ACPZ-2.5-R7 in a typical 4-layer PCB layout?
In a standard 4-layer JEDEC-compliant board (4 in × 3 in), the ADP2370ACPZ-2.5-R7 exhibits θJA = 36.7°C/W and ΨJB = 17.2°C/W. With proper thermal pad soldering to a solid ground plane, it sustains 800 mA output continuously at +85°C ambient. Derating is recommended above 70°C ambient for full-load operation in enclosed environments.
Is the ADP2370ACPZ-2.5-R7 pin-compatible with other members of the ADP2370/ADP2371 family?
Yes, all ADP2370 and ADP2371 variants share identical 8-lead LFCSP packaging and pinout, including ADP2370ACPZ-2.5-R7. This allows direct substitution between fixed-output versions (e.g., -1.2-R7, -3.3-R7) and the adjustable ADP2370ACPZ-R7, provided external components match the target output voltage and load requirements.
ADP2370ACPZ-2.5-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.2V
- Voltage - Input (Max):
- 15V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 800mA
- Frequency - Switching:
- 600kHz ~ 1.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-LFCSP-WD (3x3)
ADP2370ACPZ-2.5-R7 FAQ
1.How can I place an order for ADP2370ACPZ-2.5-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2370ACPZ-2.5-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 ADP2370ACPZ-2.5-R7 reliable?
The price and inventory of ADP2370ACPZ-2.5-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2370ACPZ-2.5-R7 is usually 5 days.
3.What payment methods are accepted for ADP2370ACPZ-2.5-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2370ACPZ-2.5-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2370ACPZ-2.5-R7?
ADP2370ACPZ-2.5-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2370ACPZ-2.5-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 ADP2370ACPZ-2.5-R7?
For technical support, including ADP2370ACPZ-2.5-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2370ACPZ-2.5-R7 requirements.
6.How does Aetrix verify that ADP2370ACPZ-2.5-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2370ACPZ-2.5-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 ADP2370ACPZ-2.5-R7 meets industry standards.
7.What is the process for return or replacement of ADP2370ACPZ-2.5-R7?
All ADP2370ACPZ-2.5-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2370ACPZ-2.5-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 ADP2370ACPZ-2.5-R7 part is unused and in its original packaging.
Return procedure for ADP2370ACPZ-2.5-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP2370ACPZ-2.5-R7 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
