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| IR3827 Datasheet, PDF (7/44 Pages) International Rectifier – 6A Highly Integrated SupIRBuck Single-Input Voltage, Synchronous Buck Regulator | |||
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IR3827
ELECTRICAL CHARACTERISTICS (CONTINUED)
Unless otherwise specified, these specifications apply over, 5.5V < Vin = PVin < 21V, 0°C < TJ < 125°C, LDO_Select=Gnd,
SS_Select=Float. Typical values are specified at Ta = 25°C.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
Supply Current
Vin Supply Current (standby)
Iin(Standby)
EN = Low, No Switching
200
µA
Vin Supply Current
(dynamic)
Iin(Dyn)
EN = High, Fs = 600kHz,
Vin = PVin = 21V,
LDO_Select=Gnd
EN = High, Fs = 600kHz,
Vin = PVin = 21V,
LDO_Select=Float
10
13
mA
8
11
VCC/LDO_Out
Output Voltage
Vin(min) = 5.5V, Io = 0-30mA,
Cload =2.2uF,
4.75
5.1
5.4
LDO_Select=Float
Vcc
V
Vin(min) = 7.3V, Io = 0-30mA,
Cload = 2.2uF,
6.5
6.9
7.2
LDO_Select=Gnd
LDO_Select Input bias
Current
LDO_Select=Gnd
30
60
uA
LDO Dropout Voltage
Vcc_drop
Vin=6.5V,Io=30mA,
Cload=2.2uF,
LDO_Select=Gnd
Vin=4.7V,Io=25mA,
Cload=2.2uF,
LDO_Select=Float
0.7
V
0.7
Short Circuit Current
Ishort
LDO_Select=Gnd
70
mA
Oscillator
Rt Voltage
VRt
1.0
V
Rt = 80.6kâ¦
270
300
330
Frequency Range
Fs
Rt = 39.2kâ¦
540
600
660
kHz
Rt = 19.1kâ¦
1080 1200 1320
Vin = 7.3V, Vin slew rate max
= 1V/µs, Note 8
1.095
Ramp Amplitude
Vin = 12V, Vin slew rate max
1.80
= 1V/µs, Note 8
Vramp
Vp-p
Vin = 21V, Vin slew rate max
3.15
= 1V/µs, Note 8
Vin=Vcc=5V, For external Vcc
operation, Note 8
0.75
7 www.irf.com © 2013 International Rectifier
July 18, 2013
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