ncp1423 ON Semiconductor, ncp1423 Datasheet - Page 3

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ncp1423

Manufacturer Part Number
ncp1423
Description
400 Ma Sync-rect Pfm Stepup Dcdc Converter With Truecutoff And Ringkiller
Manufacturer
ON Semiconductor
Datasheet

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6. Value depends on voltage at V
7. Values are guaranteed by design.
ELECTRICAL CHARACTERISTICS
(V
Operating Voltage
Output Voltage Range
Minimum Input Voltage for Startup
Reference Voltage
Reference Voltage Temperature Coefficient
FB Input Threshold (I
FB Input Threshold (I
FB Input Current
Internal NFET ON−Resistance (I
Internal PFET ON−Resistance (I
LX Switch Current Limit (NFET) (Note 7)
Operating Current into OUT (V
Operating Current into BAT
Shutdown Current into BAT
LX Switch MAX. ON−Time (V
LX Switch MIN. OFF−Time (V
BAT to LX Resistance (V
LBI Input Threshold
LBI Input Hysteresis
LBI Input Current
LBO Low Output Voltage (V
Maximum Continuous Output Current (V
Maximum Continuous Output Current (V
Soft Start Time
EN Shutdown Threshold (V
EN Input Current
ADEN Threshold (V
ADEN Input Current
ADEN Switch Resistance
Thermal Shutdown Temperature (Note 7)
Thermal Shutdown Hysteresis (Note 7)
OUT
(I
(V
(LBI/EN = 0 V, V
(V
LOAD
BAT
IN
= 3.3 V, T
= 1.2 V, T
= 1.2 V, V
= 0 mA, Cref = 100 nF, T
A
A
= 25°C for typical value, −40°C v T
FB
= 25°C, C
BAT
= 0.7 V, V
BAT
LOAD
LOAD
= 3.3 V, T
= 0.9 V to 3.3 V)
FB
= 0 mA, T
= 0 mA, T
REF
BAT
= 0.7 V)
LBI
FB
Characteristic
LX
FB
FB
= 0 V, I
= 100 nF, V
= 1.2 V)
A
OUT
= 0 V)
LX
LX
= 1.2 V, T
A
= 0 V)
= 0.7 V, T
= 25°C)
= 25°C)
=100 mA, T
=100 mA, T
.
A
A
= −40°C to 85°C)
= 25°C)
SINK
IN
IN
A
= 2.5 V, V
= 0.8 V, V
OUT
A
= 1.0 mA)
= 25°C)
= 25°C)
A
A
= 3.3 V) (Note 6)
= 25°C) (Note 7)
= 25°C) (Note 7)
OUT
OUT
A
v 85°C for min/max values unless otherwise noted.)
http://onsemi.com
= 3.3 V) (Note 7)
= 3.3 V) (Note 7)
NCP1423
3
R
R
V
Symbol
R
TC
V
I
T
DS(ON)_N
DS(ON)_P
V
V
V
R
T
BAT_SD
LBI_HYS
I
I
V
V
BAT_LX
SDHYS
IN_MIN
I
I
ADEN
QBAT
t
V
LBO_L
V
V
T
SHDN
I
t
I
SHDN
ADEN
ADEN
V
OUT
OUT
I
I
OFF
LIM
OUT
REF
I
ON
LBI
VREF
FB
EN
LBI
SS
FB
FB
Q
IN
1.177
0.489
0.493
0.475
1.15
0.34
Min
200
100
0.8
1.8
80
0.5*V
1.195
0.500
0.500
0.500
0.85
0.05
0.50
Typ
200
100
150
100
100
1.0
0.3
0.6
1.2
9.0
2.0
0.5
1.4
1.5
2.0
15
30
BAT
V
1.213
0.512
0.508
0.525
Max
0.90
0.45
0.68
350
145
3.3
0.8
3.0
1.5
2.8
0.2
8.0
OUT
12
mV/°C
Unit
mV
mA
mA
ms
nA
mA
mA
mA
nA
nA
nA
ms
ns
°C
°C
W
W
W
W
V
V
V
V
V
V
A
V
V
V
V

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