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3 Leadtrend Technology Corporation
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LD7550-DS-00 August 2004
4
Leadtrend Technology Corporation
LD7550-DS-00 August 2004
Electrical Characteristics
(T A = +25o C unless otherwi stated, V CC =15.0V)
PARAMETER CONDITIONS MIN TYP MAX UNITS Supply Voltage (Vcc Pin)
Startup Current
5 25 µA V COMP =0V 3 4 mA V COMP =3V 2 mA Operating Current
V COMP =open 0.7 mA UVLO (off)
10.4 11.4 12.4 V UVLO (on)
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14.8 16.0 17.5 V Voltage Feedback (Comp Pin)
Short Circuit Current
歌曲在线听V COMP =0V 2.2 3.0 mA Open Loop Voltage
COMP pin open 5.0 V Green Mode Threshold VCOMP
2.35 V Current Sensing (CS Pin)pecuniary
Maximum Input Voltage
0.80 0.85 0.90 V Leading Edge Blanking Time
250 nS Input impedance坚持到底英文
50 K Ω Delay to Output
graphic300 nS Oscillator (RT pin)
Frequency RT=100K Ω 61.5 66.5 71.5 KHz Green Mode Frequency
Fs=66.5KHz 20 KHz Temp. Stability
大学生英语竞赛成绩查询(-30°C ~85°C) 5 % Voltage Stability
(VCC=12V-30V) 2 % Gate Drive Output (OUT Pin)
Output Low Level
VCC=15V, Io=20mA 1 V Output High Level
VCC=15V, Io=20mA 8 V Rising Time
Load Capacitance=1000pF 50 200 nS Falling Time Load Capacitance=1000pF 30 125 nS
inconvenience
5 Leadtrend Technology Corporation
LD7550-DS-00 August 2004
6 Leadtrend Technology Corporation
海盗美剧
LD7550-DS-00 August 2004
