Electrical Characteristics: continued
TEST CONDITIONS MIN
PARAMETER
TYP
MAX
UNIT
■ Current Sense Amplifier: continued
Input Offset Voltage
VIS+ = 2.5V; VIS- = VISCOMP
-8
0
8
mV
nA
nA
V
Input Bias Currents
Input Offset Current (IS+, IS-)
VIS+ = VIS- = 0V; IIS flows out of pins
20
0
250
250
-250
-0.3
Input Signal Voltage Range
(Note 1)
V
CC-4.0
■ RAMP/SYNC Generator
Ramp Source Current Initial
Accuracy
V
SYNC = 5V, VRAMP = 2.5V ; T = 25¡C
0.18
0.20
0.22
0.24
mA
(Note 1)
Ramp Source Current
Ramp Sink Current
VSYNC = 5V; VRAMP = 2.5V
0.16
1.0
3.3
1.4
1.7
0.3
2.3
0.20
4.0
3.5
1.5
2.0
0.6
2.5
1
mA
mA
V
V
SYNC = 0V; VRAMP = 2.5V
SYNC = 5V
RAMP Peak Voltage
RAMP Valley Voltage
RAMP Dynamic Range
V
3.7
1.6
2.3
1.0
2.7
20
VSYNC = 0V
RAMPDR = VRAMPPK Ð VRAMPVY
V
V
V
RAMP Sleep Threshold Voltage VRAMP @ VREF < 2.0V
V
SYNC Threshold
VSYNC @ VRAMP > 2.5V
V
SYNC Input Bias Current
VSYNC = 0V; ISYNC flows out of pin
µA
■ Output Stage
VG, High
VSYNC = 5V; IVG = 200mA, VC Ð VG
VSYNC = 0V; IVG = 200mA
1.6
0.9
30
2.5
1.5
75
V
VG, Low
V
VG Rise Time
Switch VSYNC High; CG = 1nF;
ns
VCC = 15V; measure 2V to 8V
VG Fall Time
Switch VSYNC Low; CG = 1nF
VCC = 15V; measure 8V to 2V
40
100
100
ns
VG Resistance to Gnd
VD Resistance to Gnd
Remove supplies; VG = 10V
Remove supplies; VD = 10V
50
k½
½
500
1500
■ General
I
I
CC, Operating
CC in UVL
VSYNC = 5V
12
300
80
20
4
18
500
200
50
8
mA
µA
µA
µA
mA
VCC = 6V
ICC in Sleep Mode High
CC In Sleep Mode Low
VRAMP = 0V; VCC = 45V
VRAMP = 0V; VCC = 10V
I
IC, Operating High
VSYNC = 5V; VFB = VISÐ = 0V;
VC = 75V
IC, Operating Low
UVLO Start Voltage
UVLO Stop Voltage
UVLO Hysteresis
VSYNC = 5V; VFB = VISÐ = 0V; VC = 8V
3
6
mA
V
7.4
6.4
0.8
8.0
7.0
1.0
280
750
9.2
8.3
1.2
V
V
Leading Edge, tDELAY
Trailing Edge, tDELAY
VSYNC = 2.5V to VG = 8V
VSYNC = 2.5V to VG = 2V
ns
ns
Note 1: Guaranteed by design. Not 100% tested in production.
3
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
