FP6151
5A, 36V, Step-Down Converter
General Description
The FP6151 is a buck regulator with a built in internal power MOSFET. It achieves 5A continuous
output current over a wide input supply range with excellent load and line regulation. Current mode
operation provides fast transient response and eases loop stabilization. A wide switching frequency
range allows efficiency and external component size to be optimized. The device includes under
voltage lockout and thermal shutdown protection. The regulator only consumes 10µA supply current in
shutdown mode. The FP6151 requires a minimum number of readily available external components to
complete a 5A buck regulator solution.
Features
Operating Input Range up to 36V
5A Output Current
Built-in Soft-Start
65mΩ Internal Power MOSFET Switch
Up to 90% Efficiency
10μA Shutdown Mode Current
Adjustable Switching Frequency using external Resistance setting
Thermal Shutdown
Under Voltage Lockout
Available SOP8 With Exposed PAD
Applications
Automotive Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
Typical Application Circuit
Vout
1
OFF ON
2
SW
BS
VIN
EN
FP6151
3 COMP
4
FB
RT
GND
8
7
Vin
6
5
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.61
1/12
FP6151
Function Block Diagram
VIN
HVIN
+
Current sense
amplifier
RT
-
LVDD
LVDDBG
+
FB
Oscillator
CMP
0.3V
0.808V
BS
LVDDBS
S
CLK
LVDD
-
LVDD
LVDDBG
-
EA
+
+
+
LVDDBG
PLMT
S
Q
R
Q
SW
PWM
Comparator
Soft-start
COMP
EN
HVIN
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