FA551X series
FA5510P (N), FA5511P (N) FA5514P (N), FA5515P (N)
■ Description
The FA551X series are the PWM type switching power supply control ICs that can directly drive power MOSFET. These ICs use a CMOS device with high dielectric strength (30V) to implement low power consumption. These ICs contain many function in a small 8-pin package. With these ICs, a highperformance and compact power supply can be created because not many external discrete components are needed.
CMOS IC For Switching Power Supply Control FA551X
■ Dimensions, mm SOP-8
8 5
1 4.9
4
+0.1 –0.05
6.0±0.2
3.9
■ Features
• Low current consumption by CMOS process with high dielectric strength (30V) • Standby current of 2µA or less (at Vcc=14V), and operating current of 1.5mA (typ) • Overvoltage protection function detecting the Vcc voltage • A drive circuit for connecting a power MOSFET directly • Output peak current: ±1.5A • Pulse-by-pulse overcurrent limiting function • Overload protection function (latch or non-latch mode selectable) • Output ON-OFF function by external signal • Latch-mode overvoltage shutdown function • Undervoltage lockout function (16.5V ON / 9V OFF) • Reference voltage output (5V) • 8-pin package (DIP/SOP)
0.4±0.1 1.27
DIP-8
8
5
1
9.3
4
1.5±0.3
6.4
3.0min 4.5max
3.3
0~8°
■ Block diagram FA5510P (N), FA5511P (N)
CS(8) REF (7)
5V VCC ENB 5V REF 8.5V/7.9V 0.8V 3.5V ENB 4V PWM Dmax FA5510: 46% FA5511: 70% OSC RT CT OUT PUT 0.8V/0.68V 5.2µA 0.95mA 15.5V 15.5V UVLO
0.05 0.25 –
7.62
0~15 ˚
0~1 5˚
VCC(6)
2.54
0.46±0.1
16.5V/9V
FB (2)
OUT (5)
Pin Pin Function No. symbol 1 RT FB IS GND OUT VCC REF CS Oscillator timing resistor Feedback Overcurrent detection Ground Output Power supply Reference voltage Soft-start and ON/OFF control
Description Setting oscillation frequency Input of PWM comparator Input of the overcurrent limiting function Ground Output for driving a power MOSFET Power supply Reference voltage output (5V) Soft-start, ON/OFF function and latch-mode shutdown operations
R +0.24V
GND (4)
2 3 4 5 6 7 8
QB SQ FF
5V Controlled block
RT(1)
IS+(3)
FA5514P (N), FA5515P (N)
CS(8) REF (7)
5V VCC ENB 5V REF 8.5V/7.9V 0.8V 3.5V ENB 4V PWM Dmax FA5514: 46% FA5515: 70% OSC RT CT OUT PUT 0.8V/0.68V 5.2µA 0.95mA 15.5V 15.5V UVLO
VCC(6)
Type FA5510P
OUT (5)
Max. duty cycle (typ.) 46% 70% 46% 70%
Polarity of overcurrent Package detection + + – – DIP-8 SOP-8 DIP-8 SOP-8 DIP-8 SOP-8 DIP-8 SOP-8
16.5V/9V
FA5510N FA5511P FA5511N
FB (2)
R -0.17V
GND (4)
FA5514P FA5514N FA5515P FA5515N
QB SQ FF
5V Controlled block
RT(1)
IS-(3)
1.8max
+0.1
0.20
1
FA551X
■ Absolute maximum ratings
Item
Supply Voltage Low impedance source (ICC>15mA) Internal zener clamp (ICC
很抱歉,暂时无法提供与“FA5510P”相匹配的价格&库存,您可以联系我们找货
免费人工找货