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NXP Semiconductors
SSL3250A
Photo flash dual LED driver
Table 9. Characteristics …continued
V I = 3.0 V to 5.5 V; T amb = ? 40 ° C to +85 ° C, unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ [1]
Max
Unit
High power LED parameters
V O
I LED
output voltage
LED current
on pin VO
IF_SEL = 0;
[6]
-
40
-
50
9.5
60
V
mA
current control register = 08h;
STRB = 0
IF_SEL = 0;
106
125
144
mA
current control register = 30h;
STRB = 0
IF_SEL = 0;
356
395
435
mA
current control register = C0h;
STRB = 1
IF_SEL = 0;
450
500
550
mA
current control register = F8h;
STRB = 1
default flash current;
[3]
450
500
550
mA
IF_SEL = 1; EN1 = 1; EN2 = 1;
R_FL = HIGH
default torch current;
[3]
106
125
144
mA
IF_SEL = 1; EN1 = 0; EN2 = 1;
R_TR = HIGH
I leak(LED)
leakage current on pin LED
ACT = 0; Shut-down mode
-
-
0.5
μ A
V LED
V ovp
voltage on pin LED
overvoltage protection voltage
Boost mode; I LED = 0.5 A
Follower mode
[7]
[7]
-
350
9.8
300
-
10.5
-
-
11.0
mV
mV
V
Indicator LED parameters
I I_IND
current on pin I_IND
IF_SEL = 0 (I 2 C)
IF_SEL = 1 (direct enable)
default indicator current;
2.5
2.5
-
-
-
10
17.5
20
-
mA
mA
mA
IF_SEL = 1; EN1 = 1; EN2 = 0;
R_IND = HIGH
Δ I I_IND
current variation on pin I_IND
-
-
15
%
I leak(I_IND)
leakage current on pin I_IND
ACT = 0; Shut-down mode
-
-
1
μ A
Power MOSFET
R DSon
drain-source on-state resistance
NFET
-
200
425
mW
Timing
f sw
δ max
switching frequency
maximum duty cycle
1.08
-
1.2
-
1.32
82
MHz
%
t start(soft)
soft start time
ACT = 0 to ACT = 1
-
160
400
μ s
response time
t to(acc)
accuracy of time-out time
the absolute value can be
10
-
10
%
set with I 2 C
SSL3250A_5
? NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 16 December 2009
21 of 26
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