PSR Driver. LP3792 Datasheet

LP3792 Driver. Datasheet pdf. Equivalent


LANDP LP3792
LP3792
Low Standby Power Off-Line PSR Driver
Description
The LP3792 is a high performance AC/DC power
supply controller for battery charger and adapter
applications. The device uses Pulse Frequency
Modulation (PFM) method to build discontinuous
conduction mode (DCM) flyback power supplies.
The LP3792 provides accurate constant voltage,
constant current (CV/CC) regulation without requiring
opto-coupler and the secondary control circuitry. It
also eliminates the need of loop compensation
circuitry while maintaining good stability.
The LP3792 can achieve excellent regulation and
high average efficiency which is suitable for US DoE
VI requirement, yet meets no-load consumption less
than 75 mW.
The LP3792 provides many protections which
include OVP ,OTP and output short protection.
The LP3792 is available in SOT23-6.
Features
Drive power MOS and Suitable for US DoE VI
application
Valley voltage Turn on to advance efficiency
The external drive MOS
High precision CC/CV output
75 mW Standby power
Proprietary cable voltage drop compensation
FB Pin open-short Protection
VCC Pin UVLO Protection
Over temperature Protection
Application
Adapters/Chargers for Cell/cordless Phones,
PDAs, MP3 and Other Portable Devices
Upgrading the best choice - linear power supply
and RCC switching power supply
Standby and Auxiliary Power Supplies
Typical Application
3 VCC OUT 1
6 FB NC 5
2 GND CS 4
LP3792_EN_DS_Rev0.95
Figure 1: Typical Application Circuit
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LP3792 Datasheet
Recommendation LP3792 Datasheet
Part LP3792
Description Low Standby Power Off-Line PSR Driver
Feature LP3792; LP3792 Low Standby Power Off-Line PSR Driver Description The LP3792 is a high performance AC/DC pow.
Manufacture LANDP
Datasheet
Download LP3792 Datasheet




LANDP LP3792
Ordering Information
Version
Package
LP3792
SOT23-6
Pin Definition
OUT
LP3792
Low Standby Power Off-Line PSR Driver
Packing Form
Tape
3,000 Piece/Roll
Marking
92XXX
92LP3792
XXXIC Indetifier
FB
GND
NC
VCC
CS
Terminal Description
Figure 2: Pin Definition
Number
Definition
Description
1
OUT
Drive port, connect the gate of MOS
2
GND
The ground pin of the IC
3
VCC
The power supply pin for the IC
The primary side current signal input which is used for cycle to cycle
4 CS
current limit
5 NC Don’t connect IC
6 FB The input of the primary side feedback voltage
LP3792_EN_DS_Rev0.95
www.chip-hope.com WUXI Chip Hope Micro-electronics LTD ConfidentialCustomer Use Only



LANDP LP3792
LP3792
Low Standby Power Off-Line PSR Driver
Absolute Maximum Ratings (note 1)
Symbol
Description
Parameter Scope Unit
VCC The IC supply voltage
-0.3~30
V
CS The current sensing input
-0.3~7
V
OUT Drive port
-0.3~30
FB The input pin of the PSR feedback voltage
-40~8.5
V
PDMAX
θJA
TJ
TSTG
The power dissipation(note2)
The thermal resistance from junction to ambient
Operating junction temperature range
The storage temperature range
0.45
240
-40 to 150
-55 to 150
W
/W
ESD (note3)
2 KV
Note 1: Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. Under “recommended operating
conditions” the device operation is assured, but some particular parameter may not be achieved. The electrical characteristics table defines the operation
range of the device, the electrical characteristics is assured on DC and AC voltage by test program. For the parameters without minimum and maximum
value in the EC table, the typical value defines the operation range, the accuracy is not guaranteed by spec.
Note 2: The maximum power dissipation decrease if temperature rise, it is decided by TJMAX, θJA, and environment temperature (TA). The maximum power
dissipation is the lower one between PDMAX = (TJMAX - TA)/ θJA and the number listed in the maximum table.
Note 3: Human Body mode, 100pF capacitor discharge on 1.5KΩ resistor
LP3792_EN_DS_Rev0.95
www.chip-hope.com WUXI Chip Hope Micro-electronics LTD ConfidentialCustomer Use Only







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