ncp1589l ON Semiconductor, ncp1589l Datasheet - Page 4

• Manufacturer Part Number: ncp1589l
• Description: Ncp1589l Low Voltage Synchronous Buck Controller With Light Load Efficiency And Transient Enhancement
• Manufacturer: ON Semiconductor

SUPPLY CURRENT
UNDERVOLTAGE LOCKOUT
SWITCHING REGULATOR
ERROR AMPLIFIER
GATE DRIVERS
SOFT−START
ELECTRICAL CHARACTERISTICS
C
V
BOOT Voltage Range
VREF AND ERROR AMPLIFIER
V
BOOT Quiescent Current
V
V
V
Ramp Slope
Ramp−Amplitude Voltage
Minimum Duty Cycle
Maximum Duty Cycle
LG Minimum on Time
Open Loop DC Gain (Note 1)
Output Source Current
Output Sink Current
Unity Gain Bandwidth (Note 1)
Disable Threshold
Output Source Current During Disable
Upper Gate Source
Upper Gate Sink
Lower Gate Source
Lower Gate Sink
UG Falling to LG Rising Delay Tdead1
(Note 1)
LG Falling to UG Rising Delay Tdead2
(Note 1)
Soft−Start Time
1. Guaranteed by design but not tested in production.
dV/dt on V
Reference Voltage
Output Voltage Accuracy
UG Internal Resistor to LX
LX Internal Resistor to GND
Enable to Soft−Start Delay (Note 1)
CC
CC
CC
CC
CC
TG
Input Voltage Range
Quiescent Supply Current
UVLO Threshold
UVLO Threshold
UVLO Hysteresis
= C
BG
CC
= 1.0 nF, for min/max values unless otherwise noted.)
Characteristic
(0°C < T
V
Reference and Error Amplifier Excluding
V
V
CC
CC
CC
External Resistive Divider Tolerance
Only Valid for CCM Operating Mode
Only Valid for CCM Operating Mode
V
A
CC
> 4.5 V, COMP w Disable Threshold
< 95°C; 4.5 V < [BOOT−LX] < 13.2 V, 4.5 V < BOOT < 30 V, 0 V < LX < 21 V,
= 12 V, UG−LX < 1.0 V, LG > 1.0 V
> 4.5 V, COMP Rises and Crosses
No Switching, V
Unbiased, BOOT − LX = 0
= 12 V, LG < 1.0 V, UG > 1.0 V
V
CC
http://onsemi.com
Disable Threshold
BOOT − LX = 5 V
BOOT − LX = 5 V
Rising or V
13.2 V wrt LX
No Switching
Conditions
V
V
V
V
V
V
CC
CC
fb
fb
CC
CC
Vref
< 0.8 V
> 0.8 V
Falling
Rising
= 5 V
= 5 V
4
CC
CC
= 13.2 V
Falling
−1.0
Min
−10
200
4.5
4.5
0.1
2.0
2.0
0.7
1.5
1.5
70
80
15
1.50
Typ
400
120
0.8
2.5
4.4
4.0
0.5
0.8
1.8
1.2
2.0
83
10
20
20
45
45
0
Max
13.2
100
350
500
1.0
3.8
0.9
2.6
30
10
92
40
30
30
V/ms
V/ms
MHz
Unit
mA
mV
mA
mA
dB
kW
kW
ms
mA
ns
ns
ns
ms
%
%
%
W
W
V
V
V
V
V
V
V
A
A