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FA7700V Datasheet

  • FA7700V

  • For Switching Power Supply Control

  • 13頁

  • ETC

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FA7700V, FA7701V
s
Description
FA7700V/FA7701V are the PWM type DC to DC converter
control ICs with 1ch output that can directly drive power
MOSFETs. CMOS devices with high breakdown voltage are
used in these ICs and low power consumption is achieved.
These ICs have not only the functions equivalent to those of
FA76XX series but also the functions of directly driving Nch/Pch
MOSFETs, lower power consumption, higher frequency
operation, and less external components.
CMOS IC
For Switching Power Supply Control
FA7700V, FA7701V
s
Dimensions, mm
TSSOP-8
4.4
鹵0.2
6.4
鹵0.3
s
Features
鈥?Wide range of supply voltage: V
CC
=2.5 to 20V
鈥?FA7700V: For boost, flyback converter
(Maximum output duty cycle is 80%)
鈥?FA7701V: For buck converter
(Maximum output duty cycle is 100%)
鈥?Output stage consist of CMOS push-pull circuit, and achieves
a high speed switching of external MOSFETs. (FA7700V: For
Nch-MOSFET driving, FA7701V: For Pch-MOSFET driving)
鈥?High accuracy reference voltage (Error amplifier): 0.88V鹵2%
鈥?Soft start function
鈥?Adjustable built-in timer latch for short-circuit protection
鈥?Output ON/OFF control function
鈥?Less external discrete components needed (2 components
less than conventional version of the equivalent products)
鈥?Low power consumption
Stand-by current: 40碌A(chǔ) typ.
Operating current: 1.2mA typ. (Including error amplifier output
current and oscillator current)
鈥?High frequency operation: 50kHz to 1MHz
鈥?Package: TSSOP-8, thin and small
0.575 typ
1.30 max
3.1
鹵0.3
0.1
鹵0.05
10 to 0
藲
0.65
0.22
鹵0.1
0.5
鹵0.2
s
Block diagram
FA7700V
FA7701V
RT
1
VREF
UVLO
8
0.3V
ON/OFF
0.15
鹵0.1
CS
RT
1
VREF
UVLO
8
0.3V
ON/OFF
CS
REF
2
3
4
VREF
2.2V
鈥?/div>
+
OSC
5.5V
1.5V
S.C.P
BIAS
1.5V
Power Good Signal
S.C.DET
+
鈥?/div>
2.2V
7
6
5
VCC
REF
2
3
4
VREF
2.2V
鈥?/div>
+
OSC
S.C.P
1.5V
S.C.DET
1.5V
BIAS
Power Good Signal
+
鈥?/div>
2.2V
5.5V
7
6
5
VCC
IN鈥?/div>
+
鈥?/div>
ON/OFF
OFF
0.88V
+
鈥?/div>
ER.AMP
+
鈥?/div>
+
+
OUT
IN鈥?/div>
+
鈥?/div>
ON/OFF
OFF
0.88V
+
鈥?/div>
+
鈥?/div>
+
OUT
PWM
PWM
ER.AMP
FB
GND
FB
GND
Pin No. Pin symbol Description
1
2
3
4
5
6
7
8
RT
REF
IN (鈥?
FB
GND
OUT
VCC
CS
Oscillator timing resistor
Internal bias voltage
Error amplifier inverting input
Error amplifier output
Ground
Output for driving switching device
Power supply
ON/OFF, soft start, timer latched short
circuit protection
1

FA7700V相關(guān)型號PDF文件下載

  • 型號
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    描述
    廠商
    下載
  • 英文版
    3CH-IC BROCK DIAGRAM AND APPLICATION EXAMPLE
    FUJI
  • 英文版
    3CH-IC BROCK DIAGRAM AND APPLICATION EXAMPLE
    FUJI
  • 英文版
    BROCK DIAGRAM
    FUJI
  • 英文版
    2ch Buck CONVERTER IC with Synchronized Rectifier
    FUJI
  • 英文版
    For Switching Power Supply Control
    ETC
  • 英文版
    For Switching Power Supply Control
    ETC [ETC]
  • 英文版
    For Switching Power Supply Control
    ETC
  • 英文版
    For Switching Power Supply Control
    ETC [ETC]
  • 英文版
    LOW VOLTAGE OPERATION 2CHANNELS DC/DC-IC
    FUJI
  • 英文版
    5 CHANNELS DC/DC-IC
    FUJI
  • 英文版
    7 CHANNELS DC/DC-IC
    FUJI

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