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參數(shù)資料
| 型號： | FA3687V |
| 廠商： | FUJI ELECTRIC CO LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.4 A DUAL SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 1.10 MM HEIGHT, TSSOP-16 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大?。?/td> | 378K |
| 代理商： | FA3687V |
FA3687V
1
s Block diagram
FA3687V
s Dimensions, mm
TSSOP-16
s Description
FA3687V is a PWM type DC-to-DC converter control IC with
2ch outputs that can directly drive power MOSFETs. CMOS
devices with high breakdown voltage are used in this IC and
low power consumption is achieved. This IC is suitable for very
small DC-to-DC converters because of their small and thin
package (1.1mm max.), and high frequency operation (up to
1.5MHz). You can select Pch or Nch of MOSFETs driven, and
design any topology of DC-to-DC converter circuit like a buck, a
boost, inverting, a fly-back, or a forward.
s Features
Wide range of supply voltage: VCC=2.5 to 20V
MOSFET direct driving
Selectable output stage for Pch/Nch MOSFET on each
channel
Low operating current by CMOS process: 2.5mA (typ.)
2ch PWM control IC
High frequency operation: 300kHz to 1.5MHz
Simple setting of operation frequency by timing resistor
Soft start function at each channel
Adjustable maximum duty cycle at each channel
Built-in undervoltage lockout
High accuracy reference voltage: VREF: 1.00V±1%
VREG: 2.20V±1%
Adjustable built-in timer latch for short-circuit protection
Thin and small package: TSSOP-16
CMOS IC
For Switching Power Supply Control
Pin No. Pin symbol Description
1
CP
Timer latched short circuit protection
2
SEL2
Selection of type of driven MOSFET (OUT2)
3
FB2
Ch.2 output of error amplifier
4
IN2–
Ch.2 inverting input to error amplifier
5
IN2+
Ch.2 non-inverting input to error amplifier
6
VCC
Power supply
7
CS2
Soft start for Ch.2
8
OUT2
Ch.2 output
9
OUT1
Ch.1 output
10
CS1
Soft start for Ch.1
11
GND
Ground
12
RT
Oscillator timing resistor
13
VREG
Regulated voltage output
14
IN1–
Ch.1 inverting input to error amplifier
15
FB1
Ch.1 output of error amplifier
16
SEL1
Selection of type of driven MOSFET (OUT1)
1
8
9
16
0
~
8
0.65
6.4
±0.2
0
.1
0
5
to
0
.1
4
5
4.4
5
0.22±0.02
0.5±0.08
1.1max
0.10
±0.05
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