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PULAN TECHNOLOGY

PL2733A Datasheet Preview

PL2733A Datasheet

Wide Range Synchronous Buck Controller

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PULAN TECHNOLOGY CO., LIMITED
PL2733A
Wide Range Synchronous Buck Controller
Features
Wide Input Voltage Range: 8V to 30V
Up to 93% Efficiency
Programmable Switching Frequency up
to up to 500kHz
No Loop Compensation Required
Programmable current limit
Thermal Shutdown
Available in SOP-8L Package
Applications
Car Charger / Adaptor
Pre-Regulator for Linear Regulators
Distributed Power Systems
Battery Charger
Description
The PL2733A is a sy nchronous step down
regulator from a high voltage input supply.
Operating with an input voltage range from 8V
to 30V, the PXL 2733A ac hieves 3.2A continuous
output current with excellent load and line
regulation. The switching frequency is
programmable from 130 kHz to 500 kHz and the
synchronous architecture provides for highly
efficient designs. Current mode operation
provides fast transient response and eases loop
stabilization.
The PL2733 A requires a minimum number of
readily available standard external components.
Other features include cable compensation,
programmable current limit and thermal
shutdown.
The PL2733 A converters are available in the
industry standard SOP-8L packages.
Pin Assignment and Description
18
27
PL2733A
36
45
PIN NAME
1 FB
2 RT
3 ILIM
4 VIN
5, 6 SW
7, 8 GND
DESCRIPTION
Feedback
Frequency Setting
Current Limit
Input Supply Voltage
Switch Node
Ground
PuLan Technology
1




PULAN TECHNOLOGY

PL2733A Datasheet Preview

PL2733A Datasheet

Wide Range Synchronous Buck Controller

No Preview Available !

PULAN TECHNOLOGY CO., LIMITED
Typical Application Circuit
PL2733A
PL2733A
* The output voltage is set by R2 and R3: VOUT = 1.21V • [1 + (R2/R3)].
* RT: RT is optional. The resistor range is from 130KΩ to 1.5 MΩ. PL2733A can work when keeping
RT pin floating. The default frequency is 130KHZ.
* ILIM: PL2733A can work when keeping ILIM pin floating, with 3A limit current in this situation.
DC-DC快充QC2.0车载充电器
VIN8V30V
4 VIN
2 RT
SW
SW
5
6
FB 1
NC
3
ILMmI
GND 8
GND 7
PL2733A SOP8 百盛电子
46.2K
33uh
R1
R2
VOUT 5V /9V /12V (2A)
220uf 25V
R4
4
PIU404
V3
187K 1%3
PIU403
V2
BP
8
PIU408
D-
5
PIU405
137K 1%2
PIU402
V1
D+
6
PIU406
R3
1
PIU401
GND
R
7
PIU407
FP6600
百盛电子
2.2K
220nf 6.3V
VOUT
D-
D+
USB
GND
127K
PuLan Technology
2


Part Number PL2733A
Description Wide Range Synchronous Buck Controller
Maker PULAN TECHNOLOGY
Total Page 9 Pages
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