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LD7513 Datasheet Preview

LD7513 Datasheet

Primary Side Quasi-Resonant BJT Controller

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Preliminary Datasheet
LD7513
Primary Side Quasi-Resonant BJT Controller
with CV/CC Operation
REV: P00
The values contained in this preliminary datasheet are for reference only. Users should verify for a
current and complete document before placing orders.
General Description
The LD7513 is an excellent primary side feedback BJT
controller with CV/CC operation, integrated with several
functions of protections. It minimizes the components counts
and is available in a tiny SOT-26 package. Those make it an
ideal design for low cost applications.
It provides functions of ultra-low startup current, green-mode
power-saving operation and leading-edge blanking of the
current sensing. Also, the LD7513 features Internal OTP
(Over Temperature Protection) and OVP (Over Voltage
Protection) to prevent the circuit from being damaged due to
abnormal conditions.
In most cases, the power supply with primary-side feedback
controller would accompany with some serious load
regulation effect. To deal with this problem, the LD7513
consists of dedicated load regulation compensation circuit to
enhance its performance.
Features
Primary-Side Feedback Control With Quasi-Resonant
Operation
Direct Drive Of BJT Switch
Built-In Load Regulation Compensation
Constant Current Control
Ultra-Low Startup Current (<1.3A)
0.5mA Low Operating Current at Light Load
75 kHz Maximum Switching Frequency.
Current Mode Control
Green Mode Control Improve Efficiency
LEB (Leading-Edge Blanking) On CS Pin
Built-in Soft Start
VCC OVP (Over Voltage Protection)
FB Pin Open/Short Protection
Internal OTP (Over Temperature Protection)
Applications
Mobile Phone Charger
Lower Power AC/DC Adaptor
Leadtrend Technology Corporation
Preliminary LD7513-DS-P00 March 2013
1
www.leadtrend.com.tw




Leadtrend

LD7513 Datasheet Preview

LD7513 Datasheet

Primary Side Quasi-Resonant BJT Controller

No Preview Available !

Preliminary Datasheet
LD7513
Typical Application/Performance
Pin Configuration
SOT-26 (TOP VIEW)
OUT COMP CS
65
13
YWP pp
12
4
3
VCC GND FB
YY, Y : Year code (D: 2004, E: 2005…..)
WW, W : Week code
PP : Production code
P13 : LD7513
Ordering Information
Part number
Package
TOP MARK
LD7513 GL
SOT-26
YWP/13
The LD7513 is ROHS compliant/ Green Packaged.
Shipping
3000 /tape & reel
Leadtrend Technology Corporation
Preliminary LD7513-DS-P00 March 2013
2
www.leadtrend.com.tw


Part Number LD7513
Description Primary Side Quasi-Resonant BJT Controller
Maker Leadtrend
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LD7513 Datasheet PDF






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