ncv890201 ON Semiconductor, ncv890201 Datasheet - Page 6

• Manufacturer Part Number: ncv890201
• Description: Automotive Buck Switching Regulator
• Manufacturer: ON Semiconductor

ELECTRICAL CHARACTERISTICS
for the temperature range −40°C ≤ T
SYNCHRONIZATION
SLOPE COMPENSATION
POWER SWITCH
PEAK CURRENT LIMIT
SHORT CIRCUIT FREQUENCY FOLDBACK
GATE VOLTAGE SUPPLY (DRV pin)
OUTPUT PRECHARGE DETECTOR
THERMAL SHUTDOWN
1. Not tested in production. Limits are guaranteed by design.
SYNCO Output Pulse Duty Ratio
SYNCO Output Pulse Falltime
SYNCO Output Pulse Risetime
SYNCI Input Resistance to ground
SYNCI Input High Threshold Voltage
SYNCI Input Low Threshold Voltage
SYNCI High Pulse Width
SYNCI Low Pulse Width
External Sync Frequency
Master Reassertion Time
Ramp Slope (Note 1)
(With respect to switch current)
ON Resistance
Leakage current VIN to SW
Minimum ON Time
Minimum OFF Time
Current Limit Threshold
Lowest Foldback Frequency
Lowest Foldback Frequency − High V
Hiccup Mode
Output Voltage
DRV POR Start Threshold
DRV POR Stop Threshold
DRV Current Limit
Threshold Voltage
Activation Temperature (Note 1)
Hysteresis (Note 1)
Parameter
J
≤ 150°C unless noted otherwise, and are guaranteed by test, design or statistical correlation.)
in
(V
IN
= 4.5 V to 28 V, V
S
R
F
V
V
t
Symbol
D
t
V
V
t
t
t
F
I
R(SYNC)
t
F
F(SYNC)
R
t
F
HSYNCI
ramp(HV)
OFFMIN
SWAFHV
DRVLIM
V
H(SYNC)
LSYNCI
I(SYNC)
S
I
DRVSTT
DRVSTP
ONMIN
V
T
(SYNC)
HSYNC
LSYNC
LKSW
SWHIC
SYNCI
T
DSON
I
SWAF
SSEN
ramp
LIM
DRV
HYS
SD
http://onsemi.com
At F
Time from last rising SYNCI edge
to first un−synchronized turn−on.
V
EN
V
V
EN
C
C
SW
FB
FB
At F
LOAD
LOAD
= 5 V, V
6
V
= 0 V, V
V
Measured at SW pin
Measured at SW pin
= 0 V, 4.5 V < V
V
= 500 kHz (max duty cycle)
= 0 V, 20 V < V
SYNC
SYNC
20 V < V
BST
SW
4.5 < V
C
V
= 40 pF, 90% to 10%
= 40 pF, 10% to 90%
SYNCI
Conditions
LOAD
V
= 2 MHz (normal)
V
= V
DRV
BST
> max V
FB
< min V
SW
IN
SW
= 0 V
= 40 pF
IN
= V
= 5.0 V
= 0 V
= 0, V
< 18 V
< 28 V
+ 3.0 V
SW
LSYNC
HSYNC
IN
IN
IN
+ 3.0 V, C
< 28 V
< 18 V
= 18 V
DRV
0.25
= 0.1 mF, Min/Max values are valid
Min
400
200
150
0.8
1.8
0.7
2.2
3.1
2.7
2.5
40
50
40
40
45
30
24
16
20
5
2.45
Typ
650
500
250
3.3
2.9
2.8
30
50
32
35
4
4
Max
3.05
200
650
600
300
190
2.0
2.5
1.3
0.6
2.7
3.5
3.0
60
10
70
70
40
45
50
20
MHz
A/ms
Unit
kHz
mW
mA
mV
k
mA
°C
°C
ns
ns
ns
ns
ns
ns
ns
%
V
V
A
V
V
V