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ADP1148-3.3

Features: Operation From 3.5 V to 18 V Input VoltageUltrahigh Efficiency > 95%Low Shutdown CurrentCurrent Mode Operation for Excellent Line and Load Transient ResponseHigh Efficiency Maintained Over Wide Current RangeLogic Controlled Micropower ShutdownShort Circuit ProtectionVery Low Dropout O...

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SeekIC No. : 004276279 Detail

ADP1148-3.3: Features: Operation From 3.5 V to 18 V Input VoltageUltrahigh Efficiency > 95%Low Shutdown CurrentCurrent Mode Operation for Excellent Line and Load Transient ResponseHigh Efficiency Maintained O...

ADP1148-3.3 Data Sheet

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Part Number:
ADP1148-3.3
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/21

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Product Details

Description



Features:

Operation From 3.5 V to 18 V Input Voltage
Ultrahigh Efficiency > 95%
Low Shutdown Current
Current Mode Operation for Excellent Line and Load Transient Response
High Efficiency Maintained Over Wide Current Range
Logic Controlled Micropower Shutdown
Short Circuit Protection
Very Low Dropout Operation
Synchronous FET Switching for High Efficiency
Adaptive Nonoverlap Gate Drives


Application

Notebook and Palmtop Computers
Portable Instruments
Battery Operated Digital Devices
Industrial Power Distribution
Avionics Systems
Telecom Power Supplies
GPS Systems
Cellular Telephones


Pinout

Connection Diagram


Specifications

Input Supply Voltage (Pin 3)  . . . . . . . . . . . . . 0.3 V to +20 V
Continuous Output Currents (Pins 1, 14)  . . . . . . . . . .  50 mA
Sense Voltages (Pins 7, 8)  . . . . . . . . . . . . . . . .0.3 V to VCC
Operating Temperature Range  . . . . . . . . . . . .  0°C to +70°C
Extended Commercial Temperature Range  . .40°C to +85°C
Junction Temperature  . . . . . . . . . . . . . . . . . . . . . . . . .  150°C
Storage Temperature Range  . . . . . . . . . . . 65°C to +150°C
Lead Temperature (Soldering, 10 sec)  . . . . . . . . . . . .  300°C


Description

The ADP1148 is part of a family of synchronous step-down switching regulator controllers featuring automatic sleep mode to maintain high efficiencies at low output currents.  ADP1148 can drive external complementary power MOSFETs at switching frequencies up to 250 kHz using a constant off-time current-mode architecture.

The constant off-time architecture maintains constant ripple current in the inductor, easing the design of wide input range converters. Current-mode operation provides excellent line and load transient response. The operating current level is user programmable via an external current sense resistor. The ADP1148 incorporates automatic Power Saving Sleep Mode operation when load currents drop below the level required for continuous operation. In sleep mode, standby power is reduced to only about 2 mW at VIN = 10 V. In shutdown, both MOSFETs are turned off.




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