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SI9168 Datasheet(PDF) 2 Page - Vishay Siliconix

Part No. SI9168
Description  Synchronous Buck or Boost Controller for 2-Cell Li Battery Operated Portable Communication Devices
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Maker  VISHAY [Vishay Siliconix]
Homepage  http://www.vishay.com
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SI9168 Datasheet(HTML) 2 Page - Vishay Siliconix

 
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Si9168
Vishay Siliconix
New Product
www.siliconix.com
S FaxBack 408-970-5600
2
Document Number: 70899
S-00022—Rev. A, 10-Jan--00
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to AGND
VDD
13.2 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VSS–VDD
2 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PWM/PSM, SYNC, SD, VREF, ROSC, COMP, FB, Mode
–0.3 V to VDD + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VO
.–0.3 V to VS + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PGND
.
"0.3V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltages Referenced to PGND
VS.
13.2 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DH, DL
–0.3 V to VS + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak Output Current (DH, DL)1 A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature
.–65 to 150
_C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Junction Temperature
150
_C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (Package)a
16-Pin TSSOP (Q Suffix)b
925 mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Impedance (
QJA)
16-Pin TSSOP
135
_C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Notes
a.
Device mounted with all leads soldered or welded to PC board.
b.
Derate 7.4 mW/
_C above 25_C.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation
of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING RANGE
Voltages Referenced to AGND
VDD
5 V to 10 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FOSC
200 kHz to 2 MHz
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ROSC
.25 k
W to 300 kW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PWM/PSM, SYNC, SD, Mode
0 V to VDD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VREF
0.1
mF
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltages Referenced to PGND
VS
5.0 V to 10 V (Buck)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VS
5.0 V to 12.6 V (Boost)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS
Test Conditions
Unless Otherwise Specified
Limits
–25
_C to 85_C
Parameter
Symbol
Unless Otherwise Specified
5 V
v VDD, VS v 10 V
Mina
Typb
Maxa
Unit
Reference
Output Voltage
VREF
IREF = 0 A
1.268
1.3
1.332
V
Output Voltage
VREF
VDD = 7.2 V, 25_C
1.280
1.3
1.320
V
VREF Current
IREF
–500
mA
Power Supply Rejection
PSRR
60
dB
UVLO
Under Voltage Lockout
(Turn-On)
VUVLO/LH
4.3
4.5
4.7
V
Hysteresis
VHYS
0.2
Soft-Start Time
SS Time
tSS
3
ms
SD, SYNC, PWM/PSM
Logic High
VIH
2.4
V
Logic Low
VIL
0.8
V
Input Current
IL
–1.0
1.0
mA
Mode
Logic High
VIH
70% VDD
V
Logic Low
VIL
30% VDD
V
Input Current
IL
–1.0
1.0
mA


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