Datasheet

Electrical characteristics STLED25
8/30 Doc ID 022323 Rev 3
4 Electrical characteristics
- 30 °C < T
A
< 85 °C, V
IN
= 3.7 V; V
OUT
= 7.5 V, EN13 = EN45 = V
IN
, typical values are at
T
A
= 25 °C, unless otherwise specified.
Table 6. Electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
General section
V
IN
Operating input voltage 2.3 3.7 5.5 V
Iq Shutdown mode EN13 = EN45 = 0 0.5 2 µA
V
UVLO
Undervoltage lockout
threshold
V
IN
rising 1.9 2.0
V
V
IN
falling 1.7 1.8
f
SW
Switching frequency 2.25 2.5 2.75 MHz
I
OUT
Continuous output current
(1)
V
IN
= 2.5 V, V
OUT
= 6.2 V 125 mA
I
PK
Inductor peak current 550 650 mA
ν
Application efficiency
(1)
(V
IN
= 3.7 V; V
OUT
= 6.2 V;
see application schematic)
I
OUT
= 50 mA 84
%
I
OUT
= 75 mA 86
I
OUT
= 100 mA 86
ν
DC-DC
DC-DC converter efficiency I
OUT
= 100 mA 88
V
OVP
Overvoltage protection 8.8 9.05 9.3 V
OVP
HYST
Overvoltage protection
hysteresis
250 mV
T
SHDN
Thermal shutdown 150 °C
Hysteresis 20 °C
LEDs current
I
D1-D5
Current matching -5.5 +5.5 %
V
SCP
Short-circuit protection on
LEDs
Measured on the Dx pins 1.28 V
I
LED
Absolute channel accuracy
5 mA < I
LED
< 25 mA,
V
IN
= 2.5 V to 5.5 V
-7.5 +7.5 %
2.5 mA < I
LED
< 5 mA,
V
IN
= 2.5 V to 5.5 V
-10 10 %
I
SET
Voltage reference R
SET
= 200 k to 15 k 1.28 V
Current mirror I
LED
/ I
SET
390 A/A
V
CSH
Current source headroom
voltage
135 mV