HV9985 Supertex, HV9985 Datasheet - Page 4

• Manufacturer Part Number: HV9985
• Description: LED Driver ICs
• Manufacturer: Supertex

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Electrical Characteristics
0
O
Internal Transconductance Opamp (Gm1, Gm2 and Gm3)
External Clock Input
Oscillator
Disconnect Driver (FLT1, FLT2 and FLT3)
Short Circuit Protection (all three channels)
SKIP timer
#
*
C<T
T
T
I
V
T
V
HC,SOURCE
V
T
T
RISE,FAULT
FALL,FAULT
R
CLOCK,LO
BLANK,SC
Sym
CLOCK,HI
V
V
f
P
F
F
T
OFF,MIN
V
OFFSET
I
K
ON,MIN
F
G
GB
OSC1
G
V
BIAS
A
RATIO
The specifications which apply over the full operating temperature range at 0
A
Denotes specifications guaranteed by design.
osc1
osc2
omin
OFF
SKIP
HI
osc
<+85
CM
SW
SC
V
O
M
1
O
C, otherwise the specifications are at T
Parameter
Gain bandwidth product
Open loop DC gain
Input common-mode range
Output voltage range
Transconductance
Input offset voltage
Input bias current
Resistor divider ratio (∆V
Oscillator frequency
Oscillator divider ratio
GATE1-GATE2 phase delay
GATE1-GATE3 phase delay
Minimum CLOCK low time
Minimum CLOCK high time
CLOCK input high
CLOCK input low
Switching frequency (common for
all channels)
Switching frequency range
Fault output rise time
Fault output fall time
Blanking time
Gain for short circuit comparator
Minimum current limit threshold
Propagation time for short circuit
detection
Current source at SKIP pin used for
hiccup mode protection
ΔVoltage swing at SKIP pin
●
1235 Bordeaux Drive, Sunnyvale, CA 94089
CS
(The * denotes the specifications which apply over the full operating ambient temperature range
/∆V
A
= 25
COMP
O
C. V
)
IN
#
#
#
#
#
#
#
#
#
#
#
*
*
*
*
*
*
-
-
-
-
-
-
-
-
-
-
= 24V, V
1.85
0.15
Min
-0.3
-5.0
550
440
400
110
2.0
65
50
50
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
DD1
4
= V
0.11
12.0
Typ
625
500
120
240
125
500
1.0
0.5
2.0
5.0
1.5
DD2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
O
C < T
= V
DD3
1000
Max
2.15
0.25
700
140
560
300
200
700
250
V
A
3.0
5.0
1.0
0.8
< +85
= V
-
-
-
-
-
-
-
-
-
-
-
-
DD
●
Tel: [phone]
DD
O
unless otherwise noted.)
C are guaranteed by design and characterization.
Units
μA/V
MHz
kHz
kHz
kHz
kHz
mV
dB
nA
μA
ns
ns
ns
ns
ns
ns
V
V
V
V
V
O
O
-
-
-
-
Conditions
75pF capacitance at COMP pin
Output open
---
---
---
---
---
---
F
---
---
---
---
---
---
---
RT = 400kΩ
RT = 100kΩ
---
500pF capacitor at FLT pin
500pF capacitor at FLT pin
---
---
REF = GND
FDBK = 2 • REF + 0.1V
---
---
CLOCK
●
= 6.0MHz
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HV9985