BIT3713 查看數據表（PDF） - Unspecified
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BIT3713 Datasheet PDF : 11 Pages
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Beyond Innovation Technology Co., Ltd.
BIT3713
Features:
Near Zero Stand By Current
Low Power CMOS Process
4.5V ~ 8.0V operation
Fixed High Frequency,
Voltage Mode PWM Control Topology
Latched Off Protection
Build-In 2ndLow Frequency PWM Generator
Build-In UVLO
Totem Pole Output
16 Pin Package
Pin Layout:
1
INN
CMP
LOAD
CTOSC
TIMER
ONOFF
GND
OUT2
8
16
MODSEL
ISEN
OUTADJ
PWMDC
CTPWM
PWMOUT
VDD
OUT1
9
General Description:
BIT3713 integrated circuit provides the essential PWM
features for DC/DC conversion purpose in a small low cost
16-pin package. Another built-in low frequency PWM
generator provides user more flexible applications. BIT3713
provides latched off protection feature may make the system
more reliable. CMOS process makes BIT3713 consumes
less power while compare to conventional bipolar products.
Recommended Operating Condition:
Supply Voltage
.4.5 ~ 8.0V
Operating Ambient Temperature
...-20 ~ 85
Operating Frequency
.
.50K ~ 400K Hz
Functional Block Diagram:
MODSEL PWMDC CTPWM PWMOUT
OUTADJ LOAD
ISEN
60uA
INN
2.5V
1.0V
Adaptive Adjust
Low Frequency PWM Generator
CLOCK_L
PRT
CLOCK_L
ERR_AMP
CLOCK_H
UVLO
Latch
Protection Circuit
CMP
1.25V
Ramp Wave
LOAD
Clock
& Ramp Wave
CLOCK_H
CMP_PWM
+
-
TIMER
PRT
INI
Disable
Digital Control Circuit
INI
OUT1
OUT2
CTOSC
TIMER
ON/OFF
BiTEK
December 20, 2005
DCC CONTROLLED
‘05/12/15
Preliminary
Confidential, for authorized user only
page 3 of 11
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