PSR Driver. LP3773D Datasheet

LP3773D Driver. Datasheet pdf. Equivalent

LP3773D Datasheet
Recommendation LP3773D Datasheet
Part LP3773D
Description Low Standby Power Off-Line PSR Driver
Feature LP3773D; LP3773D Low Standby Power Off-Line PSR Driver Description The LP3773D is a high performance AC/DC p.
Manufacture LANDP
Datasheet
Download LP3773D Datasheet




LANDP LP3773D
LP3773D
Low Standby Power Off-Line PSR Driver
Description
The LP3773D is a high performance AC/DC
power supply controller for battery charger and
adapter applications which integrated 850V high
voltage BJT. The device uses Pulse Frequency
Modulation (PFM) method to build discontinuous
conduction mode (DCM) flyback power supplies.
The LP3773D 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 LP3773D can achieve excellent regulation
and high average efficiency which meets no-load
consumption less than 75 mW.
The LP3773D provides many protections which
include OVP ,OTP and output short protection.
The LP3773D is available in SOP7.
Features
Suitable for 5V/1.5A application
Valley voltage Turn on to advance efficiency
800V BJT integrated
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
+
Vout
-
AC
VCC C
FB
CS GND
E
Figure 1: Typical Application Circuit
LP3773D_EN_DS_Rev.0.99
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LANDP LP3773D
Ordering Information
Version
LP3773D
Pin Definition
xxxxIC Indetifier
Package
SOP7
LP3773D
Low Standby Power Off-Line PSR Driver
Packing Form
Tape
3,000 Piece/Roll
Marking
LP3773
Dxxxx
FB
CS
VCC
E
GND
C
C
Terminal Description
Figure 2: Pin Definition
Number
Definition
Description
1 FB The input of the primary side feedback voltage
The primary side current signal input which is used for cycle to cycle
2 CS
current limit
3
VCC
The power supply pin for the IC
4
56
E The emitter pin of the integrated BJT
C The collector pin of the integrated BJT
7
GND
The ground pin of the IC
LP3773D_EN_DS_Rev.0.99
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WUXI Chip Hope Micro-electronics LTD ConfidentialCustomer Use Only



LANDP LP3773D
LP3773D
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
FB The input pin of the PSR feedback voltage
-30~8.5
V
PDMAX
θJA
θJC
TJ
TSTG
The power dissipation(note2)
The thermal resistance from junction to ambient
The thermal resistance from junction to case
Operating junction temperature range
The storage temperature range
0.45
120
70
-40 to 150
-55 to 150
W
/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
Recommended Operation Conditions
Version
Vin90VAC~265VAC50/60Hz
LP3773D
7.5W5V/1500mA
LP3773D_EN_DS_Rev.0.99
www.chip-hope.com
WUXI Chip Hope Micro-electronics LTD ConfidentialCustomer Use Only







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