Micropower DC-DC Converter Adjustable Fixed ADP1073 FUNCTIONAL BL

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Micropower DC-DC Converter Adjustable Fixed ADP1073 FUNCTIONAL BL

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FEATURES Operates Supply Voltages from Ground Current: Works Step-Up Step-Down Mode Very External Components Required Low-Battery Detector Chip User-Adjustable Current Limit Internal Power Switch Fixed Adjustable Output Voltage Versions 8-Pin SO-8 Package APPLICATIONS Single-Cell Converters Laptop Palmtop Computers Pagers Cameras Battery Backup Supplies Cellular Telephones Portable Instruments mA-20 Loop Powered Instruments Hand-Held Inventory Computers Battery-Powered Particle Detectors
Micropower DC-DC Converter Adjustable Fixed ADP1073
FUNCTIONAL BLOCK DIAGRAM
GAIN BLOCK/ ERROR
ADP1073
ILIM
COMPARATOR 1.245V REFERENCE
OSCILLATOR DRIVER
GENERAL DESCRIPTION
ADP1073 part family step-up/step-down switching regulators which operates from input supply voltage little This extremely input voltage allows ADP1073 used applications that require using single cell battery primary power source.
ADP1073 configured operate either step-up step-down mode; input voltages greater than ADP1173 recommended.
Model
ORDERING GUIDE Output Voltage Package Description Package Option*
ADP1073AN ADP1073AR ADP1073AN-5 ADP1073AR-5 ADP1073AN-12 ADP1073AR-12
PDIP SOIC PDIP SOIC PDIP SOIC
SO-8 SO-8 SO-8
*For outline information Package Information section.
CONFIGURATIONS Small Outline Package (SO-8)
Plastic Package (N-8)
ILIM (SENSE)*
auxiliary gain amplifier serve low-battery detector linear regulator. Quiescent current ADP1073-5 only unloaded, making ideal systems where long battery life required. ADP1073 deliver from input voltage range 1.25 from input. Current limiting available adding external resistor. Battery protection circuitry keeps reverse currents safe levels reverse supply voltages
VIEW (Not Scale)
ADP1073
ILIM
(SENSE)*
ADP1073
VIEW (Not Scale)
*FIXED VERSIONS *FIXED VERSIONS
This information applies product under development. characteristics specifications subject change without notice. Analog Devices assumes obligation regarding future manufacture unless otherwise agreed writing.
obtain most recent version complete data sheet, call retrieval system 1-800-446-6212 visit World Wide site http://www.analog.com.
REV.
ADP1073-SPECIFICATIONS
unless otherwise noted)
ADP1073 Units
Model
Conditions1
QUIESCENT CURRENT* QUIESCENT CURRENT, STEP-UP MODE CONFIGURATION INPUT VOLTAGE*
Switch Load, ADP1073-5 ADP1073-12 Step-Up Mode Step-Down Mode
1.15 VOUT 4.75 11.4
12.6 12.6 5.00 12.00 5.25 12.6 1000 1500
%/°C
COMPARATOR TRIP POINT VOLTAGE* OUTPUT SENSE VOLTAGE* COMPARATOR HYSTERESIS* OUTPUT HYSTERESIS* OSCILLATOR FREQUENCY* DUTY CYCLE* SWITCH TIME*
ADP10731 ADP1073-52 ADP1073-122 ADP1073 ADP1073-5 ADP1073-12 fOSC
0.15 0.35 0.05
FEEDBACK BIAS CURRENT* BIAS CURRENT* OUTPUT LOW*
REFERENCE LINE REGULATION*
SWITCH SATURATION VOLTAGE* STEP-UP MODE
ADP1073 VSET VREF ISET VCESAT (Note Between ILIM IREV
Full Load (VFB VREF)
ERROR GAIN* REVERSE BATTERY CURRENT CURRENT LIMIT CURRENT LIMIT TEMPERATURE COEFFICIENT SWITCH LEAKAGE CURRENT MAXIMUM EXCURSION BELOW
1000 -0.3
Measured ISW1 Switch
ILEAK VSW2
-400
-350
NOTES *Denotes specifications that apply over full operating temperature range. This specification guarantees that both high trip point comparator fall within range. This specification guarantees that output voltage fixed versions will always fall within specified range. waveform sense will exhibit sawtooth shape comparator hysteresis. resistor connected between source pin. ADP1110 guaranteed withstand continuous application +1.6 applied pins while ILIM, pins grounded. Specifications subject change without notice.
This information applies product under development. characteristics specifications subject change without notice. Analog Devices assumes obligation regarding future manufacture unless otherwise agreed writing.
REV.

Micropower DC-DC Converter Adjustable Fixed ADP1073 FUNCTIONAL BL

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