MT7930 Просмотр технического описания (PDF) - Unspecified
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MT7930 Datasheet PDF : 8 Pages
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Maximizing IC Performance
MT7930
Single Stage, High PFC, AC-DC LED Driver
ELECTRICAL CHARACTERISTICS
(Test conditions: VDD=12V, TA=25°C unless otherwise stated.)
Symbol Parameter
Conditions
Min Typ Max Unit
Start-up (STP pin, VDD pin)
ISTART Start up Current
UVLO Lower Threshold Voltage of VDD
VSTART Start-up Voltage
Supply Current
VDD Pin ramp down
VDD Pin ramp up
25 50 μA
6.0 7.2 8.5
V
15.5 18.5 20
V
Iq
Quiescent Current
Icc
Operating Current
Control Loop
No switching
Fs=70kHz
1.2
mA
3
mA
VFB
VCOMPH
TOFF
SCP
Primary Current Sense Voltage
Upper Limit of COMP
Off Time of DRV
Short Circuit Protection Threshold
at DSEN pin
392 400 408 mV
2.1 2.2 2.4
V
10 11 12 uS
190 200 210 mV
Over Voltage Protection
OVP1
Threshold at DSEN
3.04 3.2 3.36 V
Over Voltage Protection
OVP2
Threshold at VDD pin
18.2 19.2 23.5 V
Current Sense (CS pin)
LEB Leading Edge Blanking of CS
300
nS
OCP Over Current Protection at CS pin
2.2 2.4
V
Thermal Protection
OTP Over temperature protection
150
℃
Over temperature release
hysteresis
15
℃
Drive Stage (DRV pin)
TR
Rising Time
TF
Falling Time
CL=1nF, DRV Pin Falls
50①
nS
from VDD to 0V
CL=1nF, DRV Pin Rises
30①
nS
from 0V to VDD
Note:
① Guaranteed by design.
MT7930 Rev. 1.30
www.maxictech.com
Copyright © 2011 Maxic Technology Corporation
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