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부품번호 | LD7750R 기능 |
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기능 | High Voltage Green-Mode PWM Controller | ||
제조업체 | Leadtrend | ||
로고 | |||
LD7750R
05/12/2010
High Voltage Green-Mode PWM Controller with
Over Temperature Protection
Rev. 00
General Description
The LD7750R integrates several functions of protections,
and EMI-improved solution in a SOP-7, SOP-8 or DIP-8
package to minimize the component counts and the circuit
space.
The device provides functions of low startup current,
green-mode power-saving operation, leading-edge
blanking of the current sensing and internal slope
compensation. Also, the LD7750R features more
protections like OLP (Over Load Protection), OVP (Over
Voltage Protection), and OTP (Over Temperature
Protection) to prevent the circuit being damaged under the
abnormal conditions. The LD7750R features built-in
auto-recovery function for OVP on Vcc pin and OLP.
Features
z High-Voltage (500V) Startup Circuit
z Current Mode Control
z Green Mode Control
z UVLO (Under Voltage Lockout)
z LEB (Leading-Edge Blanking) on CS Pin
z Internal Frequency Swapping
z Internal Slope Compensation
z Internal Over Current Protection
z OVP (Over Voltage Protection) on Vcc
z OLP (Over Load Protection)
z External OTP through a NTC
z 500mA Driving Capability
Applications
z Switching AC/DC Adaptor and Battery Charger
z Open Frame Switching Power Supply
z LCD Monitor/TV Power
Typical Application
Leadtrend Technology Corporation
LD7750R-DS-00 May 2010
1
www.leadtrend.com.tw
Absolute Maximum Ratings
Supply Voltage VCC
High-Voltage Pin, HV
COMP, OTP, CS
OUT
Maximum Junction Temperature
Operating Ambient Temperature
Operating Junction Temperature
Storage Temperature Range
Package Thermal Resistance (SOP-7/ SOP-8)
Package Thermal Resistance (DIP-8)
Power Dissipation (SOP-7/ SOP-8, at Ambient Temperature = 85°C)
Power Dissipation (DIP-8, at Ambient Temperature = 85°C)
Lead temperature (Soldering, 10sec)
ESD Voltage Protection, Human Body Model (except HV Pin)
ESD Voltage Protection, Machine Model
Gate Output Current
LD7750R
-0.3V~30V
-0.3V~500V
-0.3 ~7V
-0.3 ~Vcc+0.3
150°C
-20°C to 85°C
-40°C to 125°C
-65°C to 150°C
160°C/W
100°C/W
400mW
650mW
260°C
2.5KV
250V
500mA
Caution:
Stresses beyond the ratings specified in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only
rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification
is not implied.
Leadtrend Technology Corporation
LD7750R-DS-00 May 2010
4
www.leadtrend.com.tw
4페이지 LD7750R
Typical Performance Characteristics
1.5
0.88
1.3
1.1
0.9
0.7
-40
0 40 80
Temperature (°C)
120 125
Fig. 1 HV Current Source vs. Temperature (HV=500V, Vcc=0V)
1 8. 0
1 7. 2
1 6. 4
0.87
0.86
0.85
0.84
0 .83 - 40
12
11 .2
10 .4
0 40 80
Temperature (°C)
Fig. 2 VCS (off) vs. Temperature
120 125
1 5. 6
1 4. 8
14.0 -40
70
68
66
64
62
60-40
0
Fig. 3
40 80
Temperature (°C)
UVLO (on) vs. Temperature
120 125
0 40 80
Temperature (°C)
Fig. 5 Frequency vs. Temperature
120 125
9. 6
8 .8
8
-40
25
0
Fig. 4
40 80
Temperature (°C)
UVLO (off ) vs. Temperature
120 125
23
21
19
17
15
-40
Fig. 6
0 40 80 120 125
Temperature (°C)
Green Mode Frequency vs. Temperature
Leadtrend Technology Corporation
LD7750R-DS-00 May 2010
7
www.leadtrend.com.tw
7페이지 | |||
구 성 | 총 19 페이지수 | ||
다운로드 | [ LD7750R.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
LD7750 | High Voltage Green-Mode PWM Controller | Leadtrend |
LD7750A | High Voltage Green-Mode PWM Controller | Leadtrend |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |