SM8172A Datasheet, PDF (4/17 Pages) Nippon Precision Circuits Inc – 2-output Power Supply IC

SM8172A
11. ELECTRICAL CHARACTERISTICS
Note. The specifications of “ELECTRICAL CHARACTERISTICS” are shown by using “TYPICAL APPLI-
CATION CIRCUIT” on page 13.
11-1. Common Blocks
VIN1 = VIN2 = 5.0V, GND = PGND = 0V, Ta = 25°C unless otherwise noted.
Parameter
Pin
Symbol
Condition
Rating
Unit
min
typ
max
Standby current
VIN1, 2
I _STB
Standby mode (ENDCO = ENLDO = L),
No load on inputs/outputs
–
0.01
1
µA
HIGH-level input voltage
LOW-level input voltage
HIGH-level input current
RESETN output current
Reset circuit operating
voltage
Reset circuit return delay
time
ENDCO,
ENLDO
RESETN
VIN2
V_IH
V _IL
I _IH
I _RESETN
V_RESETNL
V_RESETNH
V_RESETN = 1.0V
When VIN falls
When VIN rises
RESETN t_RESETN When VIN rises
1.8
–
–
V
–
–
0.6
V
–
5.0
10
µA
20
–
–
mA
3.5
3.7
3.9
V
3.7
3.9
4.1
V
–
65
–
ms
Under voltage lockout
TSD operating temperature
TSD hysteresis
V_UVLOL When VIN falls
VIN2
V_UVLOH When VIN rises
–
T _SD
–
T _SDHYS
2.7
3.0
3.3
V
2.9
3.2
3.5
V
–
170
–
°C
–
20
–
°C
11-2. Series Regulator
VIN1 = VIN2 = 5.0V, GND = PGND = 0V, Ta = 25°C unless otherwise noted.
Parameter
Pin
Symbol
Condition
Current consumption
Soft start time
Output voltage
Maximum output current^*1
Input stability
Load stability
Overcurrent protection
circuit operating current
VIN1, 2
LDOUT
LDOUT
LDOUT
LDOUT
LDOUT
LDOUT
I _{DD_LDO}
t _{SS_LDO}
V _LDO
I _LDO
∆V_OUT1
∆V_OUT2
No load
I_LDO = 10mA
VIN2 = 4.5V, LDOUT = 3.3V
4.5V ≤ VIN2 ≤ 5.5V, I_LDO = 30mA
VIN2 = 5.0V, 1mA ≤ I_LDO ≤ 300mA
I _OS
*1. The output voltage difference at I_LDO = 1mA and I_LDO = 450mA is within ± 3%.
Rating
Unit
min
typ
max
–
0.1
0.25
mA
0.5
1
2
ms
3.23
3.3
3.37
V
450
–
–
mA
–
0.1
0.35
%/V
–
40
–
mV
–
700
–
mA
SEIKO NPC CORPORATION —4