HV9918K7-G Supertex, HV9918K7-G Datasheet - Page 3

• Manufacturer Part Number: HV9918K7-G
• Description: LED Drivers Hysteretic Buck High Brightness LED Driv
• Manufacturer: Supertex

Specifications of HV9918K7-G

• Operating Supply Voltage: 4.5 V to 40 V
• Maximum Supply Current: 1.5 mA
• Maximum Power Dissipation: 1.6 W
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: DFN-8
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Electrical Characteristics
(V
Sense Comparator
DIM Input
Output Switch
Over-Temperature Protection
Analog Control of PWM Dimming
IN
*
= 12V, V
∆T
V
I
V
Sym
CS(HYS)
V
V
t
f
t
I
R
Guaranteed by design and characterization, 100% tested at T
V
DPDH
t
T
RAMP
RS(LO)
DPDL
V
RS(HI)
V
t
I
LEAK
I
OFF
HiGH
LOW
CS
ON
DC
HYST
ON
OT
OS
IH
IL
DIM
= V
Supertex inc.
Description
Sense voltage threshold high
Sense voltage threshold low
Propagation delay to SW off
Propagation delay to SW on
Current-sense input current
Current-sense threshold hysteresis
Pin DIM input high voltage
Pin DIM input low voltage
Turn-on time
Turn-off time
SW continuous current
ON resistance
SW leakage current
Over temperature trip limit
Temperature hysteresis
Dimming frequency
RAMP threshold, Low
RAMP threshold, High
ADIM offset voltage
DD
, V
RAMP
= GND, C
VDD
= 1.0µF, R
●
1235 Bordeaux Drive, Sunnyvale, CA 94089
CS
= 0.5Ω, T
A
= T
J
A
= -40
Min
213
158
128
130
550
2.2
1.8
-35
= 25
-
-
-
-
-
-
-
-
-
-
-
-
O
O
C. Typical characteristics are given at T
C to +125
3
Typ
100
100
140
1.0
0.1
70
70
56
10
60
-
-
-
-
-
-
-
-
-
-
O
C* unless otherwise noted)
1250
Max
●
246
182
300
1.0
0.7
0.7
2.0
2.1
70
35
-
-
-
-
-
-
-
-
-
Tel: [phone]
Units
mV
mV
mV
mV
µA
µA
Hz
ns
ns
ns
ns
ºC
ºC
V
V
Ω
V
V
A
Conditions
(V
(V
Rising edge of
(V
V
Falling edge of
(V
V
(V
---
---
---
DIM rising edge to
V
DIM falling edge to
V
---
---
V
---
---
C
C
---
---
---
A
SW
SW
SW
SW
IN
●
RAMP
RAMP
IN
IN
IN
IN
IN
= 25
= 40V
www.supertex.com
- V
- V
- V
= 0.9 • V
- V
= 0.1 • V
- V
= 0.9 • V
= 0.1 • V
= 47nF
= 10nF
O
C.
CS
CS
CS
CS
CS
) rising
) falling
) = V
) = V
) = 200mV
IN
IN
IN
IN
RS(HI)
RS(LO)
+70mV to
-70mV to
HV9918