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SI9175 датащи(PDF) 3 Page - Vishay Siliconix

номер детали SI9175
подробное описание детали  High Performance Step-Down DC-DC Converter With Adjustable Output Voltage
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производитель  VISHAY [Vishay Siliconix]
домашняя страница  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

SI9175 датащи(HTML) 3 Page - Vishay Siliconix

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Si9175
Vishay Siliconix
Document Number: 71728
S-41148—Rev. C, 14-Jun-04
www.vishay.com
3
SPECIFICATIONS
Parameter
Limits
Test Conditions Unless Specified
−40_C to 85_C, VIN = VDD,, CIN = 10 mF, COUT = 4.7 mF
L = 2.2 mH, 2.6 V v VIN v 5.5 V, R1 = 11.3 kW, R2 = 20 kW
Unit
Maxa
Typb
Mina
Test Conditions Unless Specified
−40_C to 85_C, VIN = VDD,, CIN = 10 mF, COUT = 4.7 mF
L = 2.2 mH, 2.6 V v VIN v 5.5 V, R1 = 11.3 kW, R2 = 20 kW
Symbol
Modef
Converter Operation
Maximum Output
Current
PWM
ILOAD
VIN = 3.6 V
600
mA
Maximum Output
Current
PSM
ILOAD
VIN = 3.6 V
150
mA
Dropout Voltagee
VDD
VIN = 2.6 V, IOUT = 600 mA
190
300
mV
Closed Loop Bandwidth
BW
300
kHz
Load Regulationc
PWM
VIN = 3.6 V
IOUT = 30 mA to 600 mA
0.5
%
Load Regulationc
PSM
VIN = 3.6 V
VOUT = 1.9 V @ 25_C
IOUT = 30 mA to 75 mA
0.25
%
Line Regulation
PWM
VOUT = 3 0 V VIN = 3 5 V to 5 5 V
"0.1
%/V
Line Regulation
PSM
VOUT = 3.0 V, VIN = 3.5 V to 5.5 V
"0.1
%/V
PWM/PSM Switch Threshold Current
IAUpk
200
mA
Maximum Inductor Peak Current Limit
ILpk
1500
mA
On Resistance
P-Channel
rDS( )
VIN = 3 6 V
250
mW
On Resistance
N-Channel
rDS(on)
VIN = 3.6 V
250
mW
Output Ripple Voltage
PWM
0 05 W COUT(ESR)
IOUT = 600 mA
60
mV
Output Ripple Voltage
PSM
0.05 W COUT(ESR)
IOUT = 30 mA
80
mVp-p
Efficiency
PWM
VIN = 3 6 V VOUT = 3 3 V
IOUT = 600 mA
90
%
Efficiency
PSM
VIN = 3.6 V, VOUT = 3.3 V
IOUT = 30 mA
80
%
Frequency
PSM
IOUT w 30 mA
20
kHz
Supply Current
Input Supply Current
PWM
ISUPPLY
(VDD &
IOUT = 0 mA VIN = 3 6 V (not switching FB = GND)
450
750
Input Supply Current
PSM
(VDD &
VIN)
IOUT = 0 mA, VIN = 3.6 V (not switching, FB = GND)
400
mA
Shutdown Supply Current
ISD
SD = Low
2
Thermal Shutdown
Thermal Shutdown Temperaturec
TJ(S/D)
165
_C
Thermal Hysteresisc
20
_C
Notes
a.
The algebraic convention whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.
b.
Typical values are for DESIGN AID ONLY, not guaranteed or subject to production testing.
c.
Guaranteed by design.
d.
Settling times, ts, apply after ten.
e.
Bypass is a device mode of operation, in which, the device is in 100% duty cycle. Bypass operation is possible in either PWM or PSM.
f.
Operating modes are controlled with the MODE pin where Auto mode = MODE = LOW, PWM Mode = MODE = HIGH, and PSM mode = MODE = OPEN.


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