Datasheet

Electrical characteristics STLD40D
6/16 Doc ID 12203 Rev 7
4 Electrical characteristics
T
J
= - 40 °C to 85 °C, V
I
= 3.6 V, V
EN
= 3 V, C
I
= 2.2 µF, C
O
= 4.7 µF, L = 4.7 µH, R
LED
= 8 Ω
V
O
= 32 V, typ. values @ 25 °C, unless otherwise specified.
Table 5. Electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
I
Input voltage range 3.0 5.5 V
V
O
Output voltage range V
I
37 V
I
O
Regulated output current V
O
= 36 V (10 white LEDs) 20 mA
I
SD
Stand-by current
V
EN
= Low, V
I
= 3.6 V, T
J
= 25 °C 1 3
µA
V
EN
= Low, V
I
= 3 V to 4.2 V 10
I
Q
Quiescent current
V
I
= 3 V to 4.2 V, T
J
= 25 °C 0.4 0.8
mA
V
I
= 5.5 V, T
J
= 25 °C 0.8 1.2
R
DSON
Boost switch R
DSON
V
I
= 5.5 V, I = 100 mA 0.4
ΩV
I
= 4.2 V, I = 100 mA 0.4
V
I
= 3.0 V, I = 100 mA 0.5
BVDS breakdown voltage 38 V
I
LIM-ADJ
Maximum peak inductor limit
adjust range
(1)
R
SET
= 12 kΩ to 100 kΩ 0.2 1 A
I
LIM
Maximum peak inductor limit
when R
SET
= V
I
(1)
V
I
= 3 V to 5.5 V 0.75 1.1 A
V
FB
Feedback voltage V
I
= 3.6 V 130 165 200 mV
Line FB Line feedback voltage V
I
= 3 V to 5.5 V 5 35 mV
T
ON_MAX
Maximum ON time V
I
= 4.2 V 5.5 µs
T
OFF_MIN
Minimum OFF time V
I
= 4.2 V 250 ns
ν
Efficiency at V
I
= 3.0 V
DC
(1)
I
O
= 20 mA, V
O
= 36 V
DC
75
%
Efficiency at V
I
= 5.5 V
DC
(1)
I
O
= 20 mA, V
O
= 36 V
DC
80
OVP Over voltage protection 36 42 V
OV
HYS
Over voltage hysteresis 1.5 V
V
EN
Enable input logic low Disable Low V
IL
0.3
V
Enable input logic high Enable High V
IH
1.2
1. Guaranteed by design.