SM8134A Datasheet, PDF (4/19 Pages) Nippon Precision Circuits Inc – White LED Driver IC

SM8134A
Electrical Characteristics
DC Characteristics
GND = 0V, V_IN = 3.6V, Ta = 25°C unless otherwise noted.
Parameter
Pin Symbol
Condition
Rating
Unit
min
typ
max
Standby current
Quiescent current
Maximum output voltage
Maximum output current
Operating frequency
Internal circuit power-ON
reset time^*1
VIN
I_STB Standby mode
–
0.01
1.00
µA
I_DD1 ×1.0 mode, no load
VIN
I_DD2 ×1.5 mode, no load
–
0.3
1.0
mA
–
1.7
4.0
mA
VOUT
V_OUT ×1.5 mode VOUT maximum voltage
4.6
4.9
5.2
V
VOUT
I_OUT ×1.5 mode
200
–
–
mA
C1M
f_OSC ×1.5 mode switching frequency
650
750
850
kHz
VIN
T_POR
Time from when power is applied until
internal circuit reset
–
0.05
1.0
ms
Soft start time
DIN1 to 5
T _SS
Time between EN signal falling edge
and LED turning ON
–
1.0
3.0
ms
LED drive pin leakage current DIN1 to 5 I_{LEAK1 to 5} Standby mode, V_{DIN1 to 5} = VIN
–
0.01
1.00
µA
LED drive current matching
DIN1 to 4
∆ I_LED
×1.0 mode, matching between channels
with I_{LED1 to 4} = 20mA setting
–3.0
–
+3.0
%
LED drive current 1
DIN1 to 4 I_{LED1 to 4} ×1.0 mode, I_{LED1 to 4} = 20mA setting
19.0
20.0
21.0
mA
LED drive pin voltage 1^*2
DIN1 to 4 V_{DIN1 to 4} I_{LED1 to 4} = 20mA setting
–
160
–
mV
LED drive current 2
LED drive pin voltage 2^*2
DIN5
DIN5
I _LED5
V_DIN5
×1.5 mode, I_LED5 maximum setting
I_DIN5 maximum setting
140
150
160
mA
–
400
–
mV
Under voltage lockout
threshold^*3
–
V_UV V_IN falling
1.6
1.9
2.2
V
Thermal protection circuit
operating temperature^*1
–
T_SD
–
170
–
°C
Thermal protection circuit
hysteresis^*1
–
T_SDHYS
–
20
–
°C
Logic-level input voltage
Logic-level input current
EN, SCK, ^{VIH HIGH-level input voltage range}
SDA
V_IL LOW-level input voltage range
EN, SCK,
I_IL
EN = SCK = SDA = VIN
SDA
I_IH EN = SCK = SDA = GND
1.8
–
–
–
–
–
–1.0
–
–
V
0.6
V
1.0
µA
–
µA
*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.
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