ncp1589l ON Semiconductor, ncp1589l Datasheet - Page 5

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

ELECTRICAL CHARACTERISTICS
C
ZERO CURRENT DETECTION (LX Pin)
ZERO CURRENT V
1. Guaranteed by design but not tested in production.
Power Good Delay (Note 1)
Zero Current Detection Blank Timer after
TG < 1.0 V
Capture Time for LX Voltage (Note 1)
Negative LX Detection Voltage
Positive LX Detection Voltage
Time for V
Zero Current Detection Blank Timer after
LG < 1.0 V (Note 1)
Initial Negative Current Detection
Threshold Voltage Setpoint (Note 1)
V
OCP Programming Time
POWER GOOD INCLUDING OVP AND UVP THRESHOLD
OVERCURRENT PROTECTION
Output Voltage
Overvoltage until PGOOD goes low
Undervoltage until PGOOD goes low
PGOOD High Upper Limit Hysteresis
PGOOD High Lower Limit Hysteresis
OVP Threshold to Part Disable
UVP Threshold to Part Disable
OC Current Source
TG
th
Adjustable Range (Note 1)
= C
BG
th
= 1.0 nF, for min/max values unless otherwise noted.)
Ugate to Phase
Adjustment and Settling Time
Lgate
Characteristic
1 V
th
Phase
ADJUSTMENT DETECTION (LX Pin)
(0°C < T
Tdead1
Time to Capture LX Voltage Once LG is <
LX−GND, Includes $2 mV Offset Range
Figure 3. Dead Time Definition
A
Blanking Time After LG is < 1.0 V
Sourced from LG pin, before SS
< 95°C; 4.5 V < [BOOT−LX] < 13.2 V, 4.5 V < BOOT < 30 V, 0 V < LX < 21 V,
V
CC
Logic Low, Sinking 4 mA
LX > 50 mV, LG on time
http://onsemi.com
> 4.5 V, R
Conditions
300 kHz
Vbdhs
Vbdls
1.0 V
oscset
5
= 60 kW
Tdead2
−5.0
Min
698
950
570
200
200
−16
0.2
3.0
9.5
1.0
1000
−3.0
Typ
880
720
600
250
300
0.5
16
16
10
0
1030
Max
−1.0
10.5
902
630
350
400
0.4
1.0
1.0
3.7
5.0
40
40
15
Unit
mV
mV
mV
mV
mV
mV
mV
mV
mV
mA
ms
ms
ns
ns
ms
ns
V
V