BM1513A PDF даташит
Спецификация BM1513A изготовлена «ETC» и имеет функцию, называемую «PWM Control 2-3A Step-Down Converter». |
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Детали детали
Номер произв | BM1513A |
Описание | PWM Control 2-3A Step-Down Converter |
Производители | ETC |
логотип |
7 Pages
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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 5、6
VSS 7、8
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
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PWM Control 2-3A Step-Down Converter
Ordering Information
BM1513
BM1513 X E
Block Diagram
acking
A: 3A ; Non-A means: 2A E means engineer, Non E means normal. Blank : Tube
A : Taping
Output
Oscillation
Circuit
Reference Voltage
Source with Soft Start
Vcc
Thermal
Shutdown
PWM-Switched
Control Circuit
+
-
FB
VON/OFF
100uA
Vss
Absolute Maximum Ratings
EN
OCSET
Symbol
VCC*1
VFB
VON/OFF*1
VOUTPUT
PD
TOPR
TSTG
Parameter
VCC pin voltage
Feadback pin voltage
ON/OFF pin voltage
Switch pin voltage
Power dissipation
Operating temperature range
Storage temperature range
Rating
VSS - 0.3 to VSS + 20
VSS - 0.3 to VCC
VSS - 0.3 to VIN + 0.3
VSS - 0.3 to VIN + 0.3
Internally limited
-20 to +125
-40 to +150
Unit
V
V
V
V
mW
o
C
oC
Caution: The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
2/7
Free Datasheet http://www.datasheet4u.net/
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PWM Control 2-3A Step-Down Converter
BM1513
Electrical Characteristics (VIN = 12V, Ta=25°C, unless otherwise specified)
Symbol
Parameter
Conditions
VFB Feedback Voltage
VIN Input voltage
ISW Switch Current (1513/A)
--
--
--
ISSS
Current consumption
during power off
VON/OFF =0V
∆VOUT
/VOUT Line regulation
VIN = 3.6V~18V
∆VOUT
/VOUT Load regulation
IOUT = 0 to 2A
fOSC Oscillation frequency
Measure waveform at SW pin
fOSC1
Frequency of current limit or
short circuit protect
Measure waveform at SW pin
VSH Evaluate oscillation at SW pin
VSL
ISH
ISL
IOCSET
TSS
RDSON
EFFI
EN pin input voltage
EN pin input leakage
current
OCSET pin bias current
Soft-Start time
Internal MOSFET Rdson
Efficiency
Evaluate oscillation stop at SW pin
--
--
--
--
--
VIN = 12V, VOUT = 5V
IOUT = 2A
Min.
0.784
3.6
2A/ 3.0
Typ.
0.8
--
--
-- 10
Max.
0.816
18
--
--
Unit
V
V
A
µA
-- 0.6 1 %
-- 0.2 0.5 %
360 400 440 KHz
8 160 16 KHz
2.0
--
--
--
-- V
0.8
-10 -- 10 µA
-10 -- 10 µA
90 100 110 µA
0.3 2
5 ms
- 100 150 mΩ
-- 92 -- %
Typical Application Circuit
VIN Vcc
ROCSET COCSET
OCSET
CVcc
CIN
REN
20K
EN
CEN
0.1µ
BM1513
VSS
Output
FB
CC
Optional
D1
VOUT
RA
+
RB
COUT
Note: VOUT = VFB x (1+RA/RB)
RB=1K~10K ohm
3/7
Free Datasheet http://www.datasheet4u.net/
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Номер в каталоге | Описание | Производители |
BM1513 | PWM Control 2-3A Step-Down Converter | ETC |
BM1513A | PWM Control 2-3A Step-Down Converter | ETC |
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