SM8134A
Electrical Characteristics
DC Characteristics
GND = 0V, V
IN
= 3.6V, Ta = 25
°
C unless otherwise noted.
Rating
Parameter
Standby current
Quiescent current
Maximum output voltage
Maximum output current
Operating frequency
Internal circuit power-ON
reset time
*1
Soft start time
LED drive pin leakage current
LED drive current matching
LED drive current 1
LED drive pin voltage 1
*2
LED drive current 2
LED drive pin voltage 2
*2
Under voltage lockout
threshold
*3
Thermal protection circuit
operating temperature
*1
Thermal protection circuit
hysteresis
*1
Logic-level input voltage
Pin
VIN
VIN
VOUT
VOUT
C1M
VIN
DIN1 to 5
DIN1 to 5
DIN1 to 4
DIN1 to 4
DIN1 to 4
DIN5
DIN5
–
–
–
EN, SCK,
SDA
EN, SCK,
SDA
Symbol
I
STB
I
DD1
I
DD2
V
OUT
I
OUT
f
OSC
T
POR
T
SS
I
LEAK1 to 5
∆
I
LED
I
LED1 to 4
V
DIN1 to 4
I
LED5
V
DIN5
V
UV
T
SD
T
SDHYS
V
IH
V
IL
I
IL
I
IH
HIGH-level input voltage range
LOW-level input voltage range
EN = SCK = SDA = VIN
EN = SCK = SDA = GND
Standby mode
×
1.0 mode, no load
×
1.5 mode, no load
×
1.5 mode VOUT maximum voltage
×
1.5 mode
×
1.5 mode switching frequency
Time from when power is applied until
internal circuit reset
Time between EN signal falling edge
and LED turning ON
Standby mode, V
DIN1 to 5
= VIN
×
1.0 mode, matching between channels
with I
LED1 to 4
= 20mA setting
×
1.0 mode, I
LED1 to 4
= 20mA setting
I
LED1 to 4
= 20mA setting
×
1.5 mode, I
LED5
maximum setting
I
DIN5
maximum setting
V
IN
falling
Condition
min
–
–
–
4.6
200
650
–
–
–
–3.0
19.0
–
140
–
1.6
–
–
1.8
–
–
–1.0
typ
0.01
0.3
1.7
4.9
–
750
0.05
1.0
0.01
–
20.0
160
150
400
1.9
170
20
–
–
–
–
max
1.00
1.0
4.0
5.2
–
850
1.0
3.0
1.00
+3.0
21.0
–
160
–
2.2
–
–
–
0.6
1.0
–
µ
A
mA
mA
V
mA
kHz
ms
ms
µ
A
%
mA
mV
mA
mV
V
°C
°C
V
V
µA
µA
Unit
Logic-level input current
*1. Design guaranteed value
*2. Pin voltage value which switching
×
1.0 mode to
×
1.5 mode when LED current shortage detection
*3. When UVLO is active, the output is stopped and internal register is reset.
SEIKO NPC CORPORATION —4
NPC [ NIPPON PRECISION CIRCUITS INC ]
