ssl3250a NXP Semiconductors, ssl3250a Datasheet - Page 20

• Manufacturer Part Number: ssl3250a
• Description: Photo ?ash Dual Led Driver
• Manufacturer: NXP Semiconductors

NXP Semiconductors
11. Thermal characteristics
Table 8.
[1]
12. Characteristics
Table 9.
V
SSL3250A_2
Product data sheet
Symbol
R
Symbol
General voltage levels
V
V
V
V
General current levels
I
I
I
Output voltages on external resistor pins
V
V
V
Allowed input voltages on external resistor pins
V
V
V
External resistors
R
R
R
sd
leak(LX)
lmtr(IM)(LX)
I
I
I(extnd)(VIN)
I(UVLO)
hys(UVLO)
R_IND
R_TR
R_FL
R_IND
R_TR
R_FL
th(j-a)
ext(R_IND)
ext(R_TR)
ext(R_FL)
= 3.0 V to 5.5 V; T
The junction to ambient thermal resistance is dependent on the board layout, PCB material application, and environmental conditions.
Thermal characteristics
Characteristics
Parameter
input voltage
extended input voltage on pin VIN
undervoltage lockout input voltage
undervoltage lockout hysteresis
voltage
shutdown current
leakage current on pin LX
peak current limiter current on
pin LX
voltage on pin R_IND
voltage on pin R_TR
voltage on pin R_FL
voltage on pin R_IND
voltage on pin R_TR
voltage on pin R_FL
external resistance on pin R_IND
external resistance on pin R_TR
external resistance on pin R_FL
Parameter
thermal resistance from junction to ambient
amb
= 40 C to +85 C, unless otherwise specified.
Rev. 02 — 21 April 2009
Conditions
on pin VIN
V
V
Shut-down mode; ACT = 0
ACT = 0
Inductor peak current limiter
Independent of load
Independent of load
Independent of load
IF_SEL = 1; Resistors used
IF_SEL = 1; Resistors used
IF_SEL = 1 or 0;
Resistors used
I
I
falling
rising
Conditions
Based on modeling on a four layer
board in free air and five thermal vias
under the IC.
[1]
[3][4]
[3][4]
[3][4]
[2]
[3]
[3]
[3]
[3]
[3]
[3]
[5]
[5]
[5]
Min
3.0
2.75
2.55
50
-
-
-
1.17
1.17
1.17
1.4
1.4
1.4
25
25
50
Photo flash dual LED driver
Typ
-
-
2.65
100
-
-
2.2
1.22
1.22
1.22
-
-
-
-
-
-
SSL3250A
[1]
© NXP B.V. 2009. All rights reserved.
Typ
63
Max
5.5
5.5
2.8
150
1
0.5
2.4
1.27
1.27
1.27
V
V
V
165
200
357
I
I
I
Unit
K/W
20 of 26
Unit
V
V
V
mV
A
V
V
V
V
V
V
k
k
k
A
A