SI9169_07 Datasheet, PDF (2/10 Pages) Vishay Siliconix – High Frequency 1-A Synchronous Buck/Boost Converter

Si9169
Vishay Siliconix
ABSOLUTE MAXIMUM RATINGS
Parameter
Voltages Referenced to GND
V_DD
MODE PWM/PSM, SYNC, SD, V_REF, R_OSC, COMP, FB
V_O
PGND
Voltages Referenced to PGND
V_S, V_IN/OUT
COIL
Peak Output Current
Continuous Output Current
Storage Temperature Range
Operating Junction Temperature
Power Dissipation (Package)^a
20-Pin TSSOP (Q Suffix)^b
Thermal Impedance (Θ_JA)
Notes:
20-Pin TSSOP^c
a. Device Mounted with all leads soldered or welded to PC board.
b. Derate 11 mW/°C above 60 °C.
c. With Pin 1 connected to GND plane.
Limit
6.5
- 0.3 V to V_DD + 0.3 V
- 0.3 V to V_S + 0.3 V
± 0.3
6.5
- 0.4 V to V_IN/OUT + 0.4 V
3 A for 1 ms
1.4
- 65 to 150
150
1.0
90
Unit
V
V
A
°C
W
°C/W
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 CONDITIONS
Parameter
Voltages Referenced to GND
V_DD
MODE, PWM/PSM, SYNC, SD
Voltages Referenced to PGND
V_S, V_IN/OUT
F_OSC
R_OSC
V_REF Capacitor
Limit
Unit
2.7 V to 6 V V
V
0 V to V_DD
2.7 V to 6 V
V
200 kHz to 2 MHz
25 kΩ to 300 kΩ
kΩ
0.1
µF
SPECIFICATIONS
Parameter
Reference
Output Voltage
Load Regulation
Power Supply Rejection
UVLO
Under Voltage Lockout (turn-on)
Hysteresis
Soft-Start Time
SS Time
Mode
Logic High
Logic Low
Input Current
Symbol
V_REF
ΔV_REF
P_SRR
V_UVLO/LH
V_HYS
t_SS
V_IH
V_IL
I_L
Test Conditions
Unless Otherwise Specified
2.7 V < V_DD < 6 V,
V_IN/OUT = 3.3 V, V_S = 3.3 V
I_REF = 0 A
T_A = 25 °C, I_REF = 0
V_DD = 3.3 V, - 500 µA < I_REF < 0
V_UVLOLH - V_UVLOHL
Limits^e
Min^a
Typ^b
Max^a
Unit
1.265
1.3
1.330
V
1.280
1.3
1.320
3
mV
60
dB
2.3
2.4
2.5
V
0.1
6
ms
0.7 V_DD
- 1.0
V
0.3 V_DD
1.0
µA
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Document Number: 70945
S-72058-Rev. E, 08-Oct-07