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ETC - PWM Control 2-3A Step-Down Converter

Numéro de référence BM1513A
Description PWM Control 2-3A Step-Down Converter
Fabricant ETC 
Logo ETC 





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BM1513A fiche technique
PWM Control 2-3A Step-Down Converter
BM1513/A
FEATURES
 Input voltage: 3.6V to 18V.
 Output voltage: 0.8V to VCC.
 BM1513 is 2A ; BM1513A is 3A
 Oscillation frequency: 400KHz
 Soft-start, Current limit, Enable function
 Thermal Shutdown function
 Built-in internal SW P-channel MOS
 replace AP151x series
 SOP-8L Pb-Free Package.
APPLICATIONS
 portable DVD
 LCD Monitor
 Graphic Card
 DVD-Video Player
 Telecom Equipment
 ADSL Modem
 Printer and other Peripheral Equipment
 Microprocessor core supply
 Networking power supply
GENERAL DESCRIPTION
BM1513/A consists of step-down switching
regulator with PWM control. These devices
include a reference voltage source, oscillation
circuit, error amplifier, internal PMOS and etc.
BM1513/A provides low-ripple power, high efficiency
and excellent transient characteristics. The PWM
control circuit is able to very the duty ratio linearly
from 0 up to 100%. This converter also contains
an error amplifier circuit as well as a soft-start
circuit that prevent s overshoot at startup. An
enable function, an over current protect function
and a short circuit protect function are built inside,
and when OCP or SCP happens, the operation
frequency will be reduced from 400KHz to 60KHz.
Also, an internal compensation block is built in to
minimum external component count.
These ICs can function as step-down switching
regulators. They serve as ideal power supply units
for portable devices when coupled with the SOP-8L
mini-package, providing such outstanding features
as low current consumption. Since this converter
can accommodate an input voltage of up to 18V, it
is also ideal when operating via an AC adapter.
PIN ASSIGNMENTS
FB 1
8 Vss
EN 2
OCSET 3
BM1513/A
7 Vss
6 Output
VCC 4
5 Output
PIN DESCRIPTIONS
Name Pin
FB 1
EN 2
OCSET
VCC
3
4
Output 56
VSS 78
Description
Feedback pin.
Power-off pin
H: Normal operation
(Step-down operation)
L: Step-down operation
stopped
(All circuits deactivated)
Add an external resistor to set
max output current.
IC power supply pin
Switch Pin. Connect external
inductor/diode here. Minimize
trace area at this pin to reduce
EMI.
GND Pin
1/7
Free Datasheet http://www.datasheet4u.net/

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