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NCV891334 Datasheet(PDF) 5 Page - ON Semiconductor

Part # NCV891334
Description  2 MHz Low-IQ Dual-Mode Step-Down Regulator
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCV891334 Datasheet(HTML) 5 Page - ON Semiconductor

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NCV891234, NCV891334
www.onsemi.com
5
Table 3. ELECTRICAL CHARACTERISTICS
VIN = 4.5 to 28 V, VEN = 5 V, VBST = VSW + 3 V, CDRV = 0.1 mF, for typical values TJ = 25°C, min/max values are valid for TJ = −40°C to
150
°C unless noted otherwise, and are guaranteed by test, design or statistical correlation (Notes 4, 5)
Parameter
Unit
Max
Typ
Min
Symbol
Test Conditions
SLOPE COMPENSATION
Ramp Slope
(With respect to switch current)
4.5 < VIN < 18 V
20 V < VIN < 28V
Sramp
Sramp(HV)
1.45
0.65
2.0
1.0
2.8
1.3
A/
ms
LOW POWER LINEAR REGULATOR
Line Regulation
IOUT = 5 mA, 6 V < VIN < 18 V
VREG(line)
5
25
mV
Load Regulation
VIN = 13.2 V, 0.1 mA < IOUT < 50 mA
VREG(load)
5
35
mV
Power Supply Rejection
VOUT(ripple) = 0.5 Vp−p, F = 100 Hz
PSRR
65
dB
Current Limit
ILIN(lim)
50
80
mA
Output clamp current
VOUT = VOUTreg(typ) + 10%
ICL(OUT)
0.5
1.0
1.5
mA
SHORT CIRCUIT DETECTOR
Switching frequency in short−circuit condi-
tion
Analog Foldback
Analog foldback – high VIN
Hiccup Mode
VOUT = 0 V, 4.5 V < VIN < 18 V
VOUT = 0 V, 20 V < VIN < 28 V
FSWAF
FSWAFHV
FSWHIC
450
225
24
550
275
32
650
325
40
kHz
RESET
Leakage current into RSTB pin
1
mA
Output voltage threshold at which the RSTB
signal goes low
VOUT decreasing
5.0 V option
3.3 V option
VRESET
4.50
2.97
4.625
3.05
4.75
3.14
V
Hysteresis on RSTB threshold
VOUT increasing
5.0 V option
3.3 V option
VREShys
25
17
60
40
100
66
mV
Noise−filtering delay
From VOUT < VRESET to
RSTB pin going low
tfilter
10
25
ms
Restart Delay time
From VOUT > VRESET + VREShys to
high RSTB
tdelay
14
16
18
ms
Low RSTB voltage
RRSTBpullup = VOUTreg/1 mA, VOUT > 1 V
VRSTBlow
0.4
V
GATE VOLTAGE SUPPLY (DRV pin)
Output Voltage
VDRV
3.1
3.3
3.5
V
DRV UVLO START Threshold
VDRVSTT
2.7
2.9
3.05
V
DRV UVLO STOP Threshold
VDRVSTP
2.5
2.8
3.0
V
DRV UVLO Hysteresis
VDRVHYS
50
200
mV
DRV Current Limit
VDRV = 0 V
IDRVLIM
21
50
mA
VIN OVERVOLTAGE SHUTDOWN MONITOR
Overvoltage Stop Threshold
VIN increasing
VOVSTP
36.5
37.7
39.0
V
Overvoltage Start Threshold
VIN decreasing
VOVSTT
36.0
37.3
38.8
V
Overvoltage Hysteresis
VOVHY
0.25
0.40
0.50
V
ENABLE (EN)
Logic low threshold voltage
VENlow
0.8
V
Logic high threshold voltage
VENhigh
2
V
EN pin input current
IENbias
0.2
1
mA
4. Refer to ABSOLUTE MAXIMUM RATINGS and APPLICATION INFORMATION for Safe Operating Area.
5. Performance guaranteed over the indicated operating temperature range by design and/or characterization tested at TJ = TA = 25°C. Low
duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.


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