SM8207 Datasheet, PDF (4/9 Pages) SamHop Microelectronics Corp. – SM8207是一顆降壓型定電流的LED驅動IC,可應用

SM8207
測試條件:VIN =18V, CVCC =CVIN =10uF, CCOMP=0.1uF, TA=25℃,除非有其他的註解,否則依此測試條件為主.
Symbol Parameter
Min Typ Max Units Test Conditions
(Error Amplifier)
VREF
Reference voltage for non-inverting input
304 314 324 mV
VO (MAX)
AV
gm
VCOMP output voltage range
Open loop gain ^[註1]
Transconductance ^[註1]
0.3
-
4.90
V VCC=5.0V
64
-
-
dB Output open
-
480
- uA/V
OCP
Over current protection threshold
Over current protection release threshold
0.9 1.0 1.1
V
針對CS腳位的測試
285 300 315 mV
(Current Sense)
TLEB
Leading edge blanking time
-
400
-
ns CS腳位的遮蔽時間
TRISE
(Gate Driver)
Gate driver output rise time
TFALL
Gate driver output fall time
(OSC)
-
75
90
ns
CL=1000pF,
from 0% to 100%
-
65
75
ns
CL=1000pF,
from 100% to 0%
TST
Start up period
50
61
70
us VCS=400mV
TON_MIN Minimum on time
-
620
-
ns
(Zero Current Detection)
RZCD
ZCD Pin Pull-Down resistance
10
12
14 KΩ
VZCD-UP ZCD Up latching threshold voltage
1.4 1.5 1.6
V VZCD = Increasing
VZCD-DN ZCD down triggering threshold voltage
0.9 1.0 1.1
V VZCD = Decreasing
VZCD-OVP ZCD Pin over-voltage protection threshold
2.5 2.65 2.8
V VCS = 0 V
TZCD-BLK Blanking time for OVP detection of ZCD pin 1.2 1.6
2.0
us
(Thermal Protection)
TSD
Thermal shutdown temperature
-
140
-
℃
THYS
Thermal shutdown hysteresis
-
40
-
℃
[註1]: 此參數沒有經過實際測試,但是被設計保證是合格的.
www.samhop.com.tw
4
Rev. 1.1 @ 2013/03