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부품번호 | FA7701V 기능 |
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기능 | Power Supply Control IC | ||
제조업체 | Fuji | ||
로고 | |||
전체 19 페이지수
Quality is our message
FUJI Power Supply Control IC
FA7700V/01V
Application Note
Dec -2000
Fuji Electric Co., Ltd.
Matsumoto Factory
h tt p :// st or e. ii i1c .c c/
http://www.Datasheet4U.com
Quality is our message
1. Description
FA7700V/FA7701V are the PWM type DC to DC converter control ICs with 1ch output that can directly drive power
MOSFETs. CMOS devices w ith high breakdown voltage are us ed in these I Cs and low pow er consumption is
achieved. These I Cs have t he m any f unctions equivalent t o t hose which our conventional version bipolar ICs –
FA76XX series- have,and have merits of output ON/OFF control f unction,directly driving Nch/Pch MOSFETs,low
power consumption , higher frequency operation, and less external discrete components.
2. Features
・Wide range of supply voltage.: VCC=2.5 to 20V
・FA7700V—for boost, flyback converter (Maximum output duty cycle is 80%)
FA7701V—for buck converter (Maximum output duty cycle is 100%)
・output stage consist of CMOS p ush-pull circuit, a nd achieves a high speed switching of external MOSFETs.
(FA7700V: for Nch-MOSFET driving, FA7701V: for Pch-MOSFET driving)
・High accuracy reference voltage (Error amplifier): 0.88V±2%
・Soft start function.
・Adjustable built-in timer latch for short-circuit protection.
・Output ON/OFF control function
・Less external d iscrete components n eeded (2 components less t han conventional v ersion of t he equivalent
products)
・Low power consumption
Stand-by current: 40μA(typ.)
Operating current: 1.2mA(typ.) (including error amplifier output current and oscillator current)
・High frequency operation: 50kHz to 1MHz
・Package: TSSOP-8(thin and small)
3. Outline
units:mm
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4페이지 (3) El ectrical characteristics
(Unless otherwise standard, Ta=25 ,Vcc=6V,RT=22k )
Quality is our message
(1)Internal Bias Section (REF terminal voltage)
Item Symbol
Conditions
Output Voltage
VREF
REF terminal source current
IREF = 0mA
Line Regulation
VLINE Vcc = 2.5 to 20V IREF = 0mA
Load Regulation
VLOAD IREF = 0 to 2mA
Variation
VTC1 Ta = -30 to 25
with temperature
VTC2 Ta = 25 to 85
MIN.
2.16
TYP.
2.23
2
2
0.3
0.3
MAX.
2.30
14
12
Units
V
mV
mV
%
%
(2)Oscillator Section (Frequency set by RT terminal )
Item Symbol
Conditions
Oscillation
frequency
fosc RT = 22k
Line Regulation
fLINE Vcc = 2.5 to 20V
Variation
fTC1 Ta = -30 to 25 , 50k to 1MHz
with temperature
fTC2 Ta = 25 to 85 , 50k to 1MHz
MIN.
155
TYP.
185
0.1
2
3
MAX.
215
Units
kHz
%
%
%
(3)Error Amplifier Section (IN- terminal , FB terminal
Item Symbol
Conditions
Reference Voltage
VB
IN- terminal, FB terminal
:shorted (Voltage Follower)
Input current
“VB”
Line Regulation
IIN-
VBLINE
Vcc = 2.5 to 20V
“VB” variation
with temperature
VBTC1
VBTC2
Ta = -30 to 25
Ta = 25 to 85
Open Loop Gain
Unity Gain
Bandwidth
AVO
fT
Output
Current
Source
Sink
IOHE FB terminal = VREF- 0.5V
IOLE FB terminal = 0.5V
MIN.
0.863
-500
70
-220
3
TYP.
0.880
1
0.3
0.3
1.5
-160
6
MAX.
0.897
+500
5
-100
12
Units
nA
mV
%
%
dB
MHz
A
mA
(4)Pulse Width Modulation (PWM) Section (FB terminal voltage and Duty Cycle)
Item Symbol
Conditions
MIN.
FB 0% threshold
VFB0 Duty Cycle = 0%
0.560
FB 50% threshold
VFB50 Duty Cycle = 50%
Maximum
Duty
Cycle
FA7700
FA7701
DMAX1
DMAX2
DMAX3
DMAX
RT = 100k ,
RT = 22k ,
RT = 3k ,
50kHz
185kHz
1MHz
85
83
80
100
TYP.
0.660
0.880
90
88
86
MAX.
0.760
95
93
92
Units
%
%
%
%
(5)Under Voltage Lock-Out Section (VCC terminal voltage)
Item Symbol
Conditions
ON threshold
VCCON
OFF threshold
VCCOF
Hysteresis Voltage
VCCHY
Variation with
temperature
Ta = -30 to 25
VCCHY Ta = 25 to 85
MIN.
1.60
0.04
TYP.
2.07
1.93
0.14
0.2
0.2
MAX.
2.30
0.24
Units
mV/
mV/
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부품번호 | 상세설명 및 기능 | 제조사 |
FA7701V | For Switching Power Supply Control | ETC |
FA7701V | Power Supply Control IC | Fuji |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |