SI9142 Datasheet, PDF (3/11 Pages) Vishay Siliconix – Synchronous Buck Controller for High Performance Processors

Si9142
Vishay Siliconix
SPECIFICATIONS
Parameter
Test Conditions
Unless Otherwise Specifed
V_CC = 4.75 V to 13.2 V
Min^a
Limits
T_A = 0 to 70°C
Typ^b
SS/Enable
Source Current
-2.5
-5
Fault Sink Current
20
35
Logic Low
Logic High
2.4
UVLO
Lockout Voltage
V_L Falling
3.6
Hysteresis
200
Error Amplifier
Unity-Gain BW Product
Input Bias Current
Offset Voltage
Output Current
PWR_GOOD
V_CC = 5 V
10
V_NI = V_REF , V_FB = 1.0 V
-1
0
V_NI = V_REF
-15.0
0
Source (V_FB = 0.8 V, NI = V_REF)
Sink (V_FB = 2.4 V, NI = V_REF)
0.8
V_{PWR_GOOD} High
V_{PWR_GOOD} Low
Output Sink Current
OVP
Typical Hysteresis = 1%
V_NI = V_REF
V_DS ≤ 1 V
V_NI + 7%
V_NI - 17%
2
V_NI +12%
V_NI -12%
Threshold Voltage
OCP
V_NI = V_REF
BST - L_X = 4.5 V
V_NI + 12%
V_NI + 17%
I_CS Sink Current
4.75 ≤ V_ICS ≤ 13.2 V
126
170
Notes
a. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum.
b. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
Max^a
-7.5
0.8
3.8
1
15.0
-1
V_NI + 17%
V_NI - 7%
V_NI + 22%
204
Unit
µA
mA
V
V
mV
MHz
µA
mV
mA
V
mA
V
µA
FaxBack 408-970-5600, request 70750
www.siliconix.com
S-60752—Rev. C, 05-Apr-99
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