HV9912 Supertex, Inc., HV9912 Datasheet - Page 3

• Manufacturer Part Number: HV9912
• Description: Switch-mode Led Driver Ic With High Current Accuracy And Hiccup Mode Protection
• Manufacturer: Supertex, Inc.

Electrical Characteristics
(The * denotes the specifi cations which apply over the full operating ambient temperature range of 0
T
A
Reference
PWM Dimming
GATE
Over Voltage Protection
V
Current Sense
Internal Transconductance Opamp
= 25
V
V
V
V
V
V
V
OVP, RISING
T
T
I
T
R
OVP, HYST
SOURCE
Sym
REFLOAD
PWMD(lo)
PWMD(hi)
T
V
T
REFLINE
DELAY1
DELAY2
OFFSET
V
OFFSET
I
I
GB
BLANK
G
V
BIAS
PWMD
A
SINK
RISE
FALL
O
REF
CM
C. V
V
O
m
IN
= 12V, unless otherwise noted.)
Over voltage rising trip point
Over voltage Hysteresis
Leading edge blanking
Delay to output of C
comparator
Delay to output of C
comparator
Comparator offset voltage
Gain bandwidth product
Open loop DC gain
Input common-mode range
Output voltage range
Transconductance
Input offset voltage
Input bias current
Parameter
REF pin voltage
Line regulation of reference
voltage
Load regulation of reference
voltage
PWMD input low voltage
PWMD input high voltage
PWMD pull-down resistance
GATE short circuit current
GATE sinking current
GATE output rise time
GATE output fall time
OMP
LIMIT
(cont.)
*
*
*
#
#
#
#
*
1.225
Min
4.75
100
-0.3
450
-5.0
2.0
0.2
0.4
-10
50
0.7
60
0
0
-
-
-
-
-
-
-
-
3
1.25
Typ
100
5.00
0.50
50
25
550
1.0
0.5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1.275
Max
150
0.8
5.25
6.75
20
10
85
45
250
200
200
650
3.0
5.0
1.0
-
-
10
-
-
-
-
Units
µA/V
MHz
mV
mV
O
kΩ
mV
mV
ns
ns
dB
ns
ns
ns
nA
V
V
V
A
A
C < T
V
V
V
V
A
< +85
OVP rising
OVP falling
---
COMP = V
C
COMP = V
C
---
75pF capacitance at OP pin
Output open
---
---
---
---
---
Conditions
REF bypassed with a 0.1µF
capacitor to GND; I
PWMD = GND
REF bypassed with a 0.1µF
capacitor to GND; I
V
REF bypassed with a 0.1µF
capacitor to GND;
---
---
V
V
V
C
C
I
REF
DD
PWMD
GATE
GATE
SENSE
SENSE
GATE
GATE
O
= 7.25 – 12V; PWMD = GND
= 0-500µA; PWMD = GND
C, otherwise the specifi cations are at
= 0V
= V
= 1.0nF
= 1.0nF
= 5.0V
= 0 to 600mV step
= 0 to 400mV step
DD
DD
DD
; C
; C
LIM
LIM
Preliminary
= REF;
= 300mV;
REF
HV9912
REF
= 0;
= 0;