My Inquiry
My Account
Analog Devices Inc. ADP1148AN-5
- Part No.:
- ADP1148AN-5
- Manufacturer:
- Analog Devices Inc.
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
ADP1148AN-5.pdf
- Description:
- IC REG BUCK 5V 14PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:8,090
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADP1148AN-5 from Analog Devices is a synchronous step-down switching regulator controller optimized for 5 V fixed-output DC/DC conversion in battery-powered systems. It operates from 3.5 V to 18 V input, delivers up to 2 A output current with >95% peak efficiency, features adaptive nonoverlap gate drives, and integrates automatic power-saving sleep mode reducing quiescent current to 160 µA at VIN = 6–18 V. It targets portable instrumentation and telecom power supplies requiring high light-load efficiency.
For engineers reviewing the ADP1148AN-5 datasheet, ADP1148AN-5 pinout, ADP1148AN-5 application, or ADP1148AN-5 equivalent, key selection criteria include its fixed 5 V output configuration, N-14 plastic DIP package thermal resistance (70°C/W), constant off-time current-mode architecture, sleep-mode current specification, and compatibility with external P/N-channel MOSFET pairs such as IRF7204/IRF7403.
Technical Context
The ADP1148AN-5 implements a constant off-time (COT) current-mode control architecture with user-programmable switching frequency via external CT capacitor (e.g., 390 pF yields 4–6 µs off-time). Its internal voltage divider connects Sense(–) (Pin 7) directly to set 5 V output, eliminating external feedback resistors required by the adjustable ADP1148 variant.
Sleep mode activates automatically below ~50 mA load, disabling gate drivers and reducing supply current from 1.6 mA (normal) to 160–280 µA while maintaining regulation via output capacitor discharge. Shutdown threshold is 0.55–2.0 V on Pin 10, and current sense threshold is 25–175 mV differential across Pins 7–8 depending on forced condition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.9–5.2 V at 700 mA load; enables direct 5 V rail generation without feedback resistor network. |
| Input Voltage Range | 3.5 V to 18 V; supports wide-input battery and industrial bus applications including 12 V telecom rails. |
| Peak Efficiency | >95% at 1 A load; achieved via synchronous P/N-MOSFET drive and adaptive nonoverlap timing. |
| Off-Time | 4–6.2 µs with CT = 390 pF; sets minimum switch-on time and stabilizes ripple current across input range. |
| Sleep Mode IQ | 160–280 µA (VIN = 6–18 V); reduces standby power to ~2 mW at VIN = 10 V for extended battery life. |
| Shutdown Threshold | 0.55–2.0 V on Pin 10; logic-compatible interface for microcontroller-controlled power sequencing. |
| Thermal Resistance | 70°C/W (θJA, N-14 package); defines junction-to-ambient rise per watt-critical for layout derating at >1 W dissipation. |
Pinout & Package
ADP1148AN-5 is housed in a 14-lead plastic DIP (N-14) package with 0.3-inch width and through-hole mounting. Thermal resistance is 70°C/W (Junction-to-Ambient), and maximum junction temperature is 150°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | P-Channel Drive | High-current gate driver output for top P-MOSFET; swings from VIN to GND-requires low-inductance routing. |
| 2 | No Connection | Internally unconnected; must remain floating-no PCB trace or pad. |
| 3 | VIN | Main input supply (3.5–18 V); powers internal circuitry and supplies gate drive energy-requires local 0.1–1 µF ceramic bypass. |
| 4 | CT | Timing capacitor node; sets off-time and operating frequency-connects to GND via precision capacitor (e.g., 390 pF). |
| 5 | Int VCC | Internal 3.3 V supply rail; must be decoupled to signal ground with ≥1 µF ceramic-no external loading permitted. |
| 6 | ITH | Error amplifier compensation node; connects to RC network for loop stability-critical for transient response tuning. |
| 7 | Sense(–) | Inverting input of current comparator and internal 5 V output divider tap-defines regulated output voltage point. |
| 8 | Sense(+) | Noninverting input of current comparator; senses RSENSE voltage drop to limit peak inductor current. |
| 9 | VFB | Not used in ADP1148AN-5; reserved for adjustable version's external feedback-must be left unconnected. |
| 10 | Shutdown | Active-high enable/disable control; <0.55 V = normal operation, >2.0 V = full shutdown (<20 µA IQ). |
| 11 | Signal GND | Analog reference ground; routed separately from power ground to minimize noise coupling into sense paths. |
| 12 | Power GND | High-current return path for N-MOSFET source and CIN (–); ties to COUT (–) only at single point. |
| 13 | No Connection | Internally unconnected; must remain floating-no PCB trace or pad. |
| 14 | N-Channel Drive | High-current gate driver output for bottom N-MOSFET; swings from GND to VIN-requires low-inductance routing. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic Sleep Mode | Reduces quiescent current to 160–280 µA below ~50 mA load-extends battery runtime without manual enable control. |
| Synchronous FET Drive | Drives complementary P/N-MOSFET pair (e.g., IRF7204 + IRF7403) eliminating external Schottky losses and boosting efficiency >95%. |
| Adaptive Nonoverlap Timing | Prevents shoot-through by enforcing dead time between P- and N-drive transitions-ensures safe switching under all load conditions. |
| Constant Off-Time Control | Maintains stable inductor ripple current across wide VIN range-simplifies EMI filtering and improves line transient response. |
| Fixed 5 V Output Configuration | Internal voltage divider eliminates external feedback resistors-reduces BOM count and layout sensitivity vs. adjustable variants. |
Applications
| Portable Instrumentation | Telecom Power Supplies |
|---|---|
|
Use Scenario: Handheld multimeters and data loggers powered by 2-cell Li-ion (6–8.4 V) or 9 V alkaline batteries. IC Role / Device Role / Timing Role: Primary step-down controller generating stable 5 V for MCU, ADC, and display subsystems. Use Value: Sleep mode IQ of 160–280 µA extends battery life beyond 100 hours in low-duty-cycle measurement modes. |
Use Scenario: Distributed 12 V input powering 5 V FPGA I/O banks and transceiver interfaces in access equipment. IC Role / Device Role / Timing Role: High-efficiency intermediate bus converter delivering 2 A at >95% efficiency across 7–15 V input range. Use Value: Constant off-time architecture maintains tight regulation during rapid line transients common in telecom rectifier outputs. |
| Avionics Systems | GPS Receivers |
|
Use Scenario: 28 V aircraft bus powering 5 V RF front-end and navigation processor in compact form factor. IC Role / Device Role / Timing Role: Input-stage DC/DC controller enabling wide VIN operation with thermal management via 70°C/W N-14 package. Use Value: Shutdown threshold (0.55–2.0 V) allows clean power sequencing with avionics system controllers using open-drain GPIO. |
Use Scenario: Automotive-grade GPS modules operating from 5–16 V vehicle battery with cold-cranking down to 6 V. IC Role / Device Role / Timing Role: Regulator maintaining 5 V output during engine start-up dips-supports dropout operation with P-MOSFET fully on. Use Value: Very low dropout behavior ensures uninterrupted GPS lock during cranking events where VIN drops near VOUT. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP1148AR-5 | Same electrical specs but SO-14 surface-mount package (θJA = 110°C/W); no through-hole mounting option. | Preferred for space-constrained PCBs; requires reflow assembly and different thermal layout vs. N-14 DIP. | Select ADP1148AR-5 when board area is limited and automated SMT assembly is available. |
| TPS54202DRT | Integrated 2 A FETs (vs. external), 4.5–17 V input, 5 V fixed output, 500 kHz fixed frequency; no sleep mode-25 µA shutdown IQ. | Lower BOM count but less flexible MOSFET selection; higher light-load inefficiency due to lack of adaptive sleep. | Choose TPS54202DRT for simplified design with lower component count where 95%+ efficiency above 100 mA is sufficient. |
Compared with ADP1148AN-5, ADP1148AR-5 offers identical regulation and control but demands surface-mount layout and dissipates more heat per watt, while TPS54202DRT trades external MOSFET flexibility and deep-sleep capability for integration and faster transient response at mid-to-high loads.
Availability
ADP1148AN-5 is available at Aetrix Electronics and suitable for portable instrumentation, telecom power supplies, avionics systems, and GPS receivers requiring stable component supply with long-term obsolescence planning.
Supply support for ADP1148AN-5 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.
The ADP1148 family was designed specifically for high-efficiency, wide-input synchronous buck conversion in portable and battery-sensitive applications-emphasizing light-load efficiency, thermal robustness, and external MOSFET flexibility.
FAQ
What is the output voltage tolerance of the ADP1148AN-5 under full load?
The ADP1148AN-5 delivers a regulated 5 V output with ±2% tolerance (4.9 V to 5.2 V) at 700 mA load and VIN = 9 V, as specified in the Electrical Characteristics table. This tolerance remains within ±2.5% across 5 mA to 2 A load range and 7–12 V input variation, ensuring reliable 5 V rail compliance for downstream logic and analog circuitry.
Does the ADP1148AN-5 require external feedback resistors to set its output voltage?
No, the ADP1148AN-5 does not require external feedback resistors. Its output voltage is fixed at 5 V by an internal resistive divider connected to the Sense(–) pin (Pin 7). Unlike the adjustable ADP1148 variant, Pin 9 (VFB) is unused and must remain unconnected in ADP1148AN-5 designs.
What is the thermal resistance (θJA) of the ADP1148AN-5 package, and how does it affect layout?
The ADP1148AN-5 uses the N-14 plastic DIP package with θJA = 70°C/W. This value assumes standard JEDEC 2-layer test board conditions; actual board-level thermal performance depends on copper area, via count, and airflow. Layout must allocate ≥1 in² of 2-oz copper connected to Pin 12 (Power GND) and Pin 11 (Signal GND) to maintain junction temperature below 150°C at >1 W dissipation.
How does the ADP1148AN-5 enter and exit sleep mode automatically?
The ADP1148AN-5 enters sleep mode when load current falls below ~50 mA, causing the internal comparator B to detect reversed RSENSE polarity and disable gate drivers-reducing IQ to 160–280 µA. It exits sleep mode when output voltage decay triggers comparator V reset, restoring normal cycle-by-cycle operation. No external control signal is needed.
Can the ADP1148AN-5 operate in dropout, and what happens to regulation during that state?
Yes, the ADP1148AN-5 supports dropout operation. When VIN drops within ~1.5 V of VOUT, the controller increases CT discharge current to maintain frequency and eventually holds the P-channel MOSFET continuously on. Regulation degrades linearly with (VIN – VOUT), but output remains functional-critical for automotive cold-crank and battery-depletion scenarios.
ADP1148AN-5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADP1148
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
ADP1148AN-5 FAQ
1.How can I place an order for ADP1148AN-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1148AN-5 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 ADP1148AN-5 reliable?
The price and inventory of ADP1148AN-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1148AN-5 is usually 5 days.
3.What payment methods are accepted for ADP1148AN-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1148AN-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1148AN-5?
ADP1148AN-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1148AN-5 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 ADP1148AN-5?
For technical support, including ADP1148AN-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1148AN-5 requirements.
6.How does Aetrix verify that ADP1148AN-5 is sourced from the original manufacturer or authorized distributors?
All ADP1148AN-5 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 ADP1148AN-5 meets industry standards.
7.What is the process for return or replacement of ADP1148AN-5?
All ADP1148AN-5 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1148AN-5, 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 ADP1148AN-5 part is unused and in its original packaging.
Return procedure for ADP1148AN-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP1148AN-5 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…
