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ADP1613

Analog Devices
Part Number ADP1613
Manufacturer Analog Devices
Description PWM DC-to-DC Switching Converter
Published Jul 14, 2009
Detailed Description Data Sheet 650 kHz /1.3 MHz Step-Up PWM DC-to-DC Switching Converters ADP1612/ADP1613 FEATURES Current limit 1.4 A for...
Datasheet PDF File ADP1613 PDF File

ADP1613
ADP1613

Overview
Data Sheet 650 kHz /1.
3 MHz Step-Up PWM DC-to-DC Switching Converters ADP1612/ADP1613 FEATURES Current limit 1.
4 A for the ADP1612 2.
0 A for the ADP 1613 Minimum input voltage 1.
8 V for the ADP1612 2.
5 V for the ADP1613 Pin-selectable 650 kHz or 1.
3 MHz PWM frequency Adjustable output voltage up to 20 V Adjustable soft start Undervoltage lockout Thermal shutdown 8-lead MSOP Supported by ADIsimPower™ design tool ADIsimPower downloadable design tools for boost, coupled- SEPIC, and SEPIC Cuk configurations APPLICATIONS TFT LCD bias supplies Portable applications Industrial/instrumentation equipment TYPICAL APPLICATION CIRCUIT L1 ADP1612/ VIN ADP1613 6 VIN SW 5 ON OFF 3 EN CIN 1.
3MHz 650kHz 7 FREQ (DEFAULT) FB 2 8 SS COMP 1 CSS GND 4 D1 VOUT R1 R2 RCOMP CCOMP COUT Figure 1.
Step-Up Regulator Configuration 06772-001 GENERAL DESCRIPTION The ADP1612/ADP1613 are step-up dc-to-dc switching converters with an integrated power switch capable of providing an output voltage as high as 20 V.
With a package height of less than 1.
1 mm, the ADP1612/ADP1613 are optimal for spaceconstrained applications such as portable devices or thin film transistor (TFT) liquid crystal displays (LCDs).
The ADP1612/ADP1613 operate in current mode pulse-width modulation (PWM) with up to 94% efficiency.
Adjustable soft start prevents inrush currents when the part is enabled.
The pin-selectable switching frequency and PWM current-mode architecture allow for excellent transient response, easy noise filtering, and the use of small, cost-saving external inductors and capacitors.
Other key features include undervoltage lockout (UVLO), thermal shutdown (TSD), and logic controlled enable.
The ADP1612/ADP1613 are available in the lead-free 8-lead MSOP.
EFFICIENCY (%) 100 VIN = 5V fSW = 1.
3MHz 90 TA = 25°C 80 70 60 50 ADP1612, VOUT = 12V 40 ADP1612, VOUT = 15V ADP1613, VOUT = 12V ADP1613, VOUT = 15V 30 1 10 100 1k LOAD CURRENT (mA) Figure 2.
ADP1612/ADP1613 Efficiency for Various Ou...


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