Si9139 Datasheet, PDF (3/17 Pages) Vishay Siliconix – Multi-Output, Individual On/Off Control Power-Supply Controller

New Product
Si9139
Vishay Siliconix
SPECIFICATIONS
Test Conditions
Limits
Parameter
Internal 5-V Regulator
V_IN = 15 V , I_VL = I_REF = 0 mA
T_A = -40_C to 85_C, All Controllers ON
Min^a
Typ^b
V_L Output Current (Internal and External)
V_L Output
V_L Fault Lockout Voltage
V_L Fault Lockout Hysteresis
Reference
All Controllers OFF, V_IN >5.5 V, 0 <I_L <30 mA
V_L Falling Edge
30
4.7
3.6
75
REF Output
REF Load Regulation
Auxiliary Feedback Voltage
Supply Current
0 to 1 mA
FB_C Pin
3.24
3.3
25
1.20
1.24
Supply Current*Shutdown
Supply Current*Operation
Oscillator
All Converters OFF, No Load
All Controllers ON, No Load, f_OSC = 300 kHz
25
1100
Oscillator Frequency
Maximum Duty Cycle
270
300
92
95
Fault Detection SMPS_A and SMPS_B Outputs
Overvoltage Trip Threshold
With Respect To Unloaded Output Voltage
6
10
Overvoltage-Fault Propagation Delay
CS_A or CS_B Driven 2% Above Overvoltage Trip
Threshold
1.5
Output Undervoltage Threshold
With Respect to Unloaded Output Voltage
-40
-30
Output Undervoltage Lockout Time
From each SMPS Enabled
16
20
RESET
RESET Start Threshold
RESET Propagation Delay (Falling)
RESET Delay Time (Rising)
With Respect To Unloaded Output Voltage
Rising Edge
-5.5
Falling Edge, FB_A or FB_B Driven 2% Above Overvol-
tage or 2% Below Undervoltage Lockout Thresholds
1.5
With Respect to 2nd SMPS Lockout Time Done
92
107
Inputs and Outputs
Feedback Input Leakage Current
FB_C = 1.24 V
Input Leakage Current
ON_A, ON_B, V_IN = 0 V or V_L
Gate Driver Sink/Source Current (Buck)
DL_A, DH_A, DL_B, DH_B Forced to 2 V
1
Gate Driver On-Resistance (Buck)
High or Low
2
Gate Driver Sink/Source Current (Auxiliary)
DH_C, DL_C Forced to 2 V
0.2
Gate Driver On-Resistance (Auxiliary)
High or Low
RESET Output Low Voltage
RESET Output High Leakage
RESET, I_SINK = 4 mA
RESET = 5 V
ON_A, ON_B
Logic Low
Logic High
V_IL
V_IH
2.4
Notes
a. The algebraic convention is used 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, and are measured at T_A = 25_C.
Max^a
60
5.5
4.2
3.36
60
1.28
60
1800
330
14
-20
24
122
1
"1
7
15
0.4
1
0.8
Unit
mA
V
mV
V
mV
V
mA
kHz
%
%
ms
%
ms
%
ms
ms
mA
A
W
A
W
V
mA
V
Document Number: 71841
S-22317—Rev. A, 16-Dec-02
www.vishay.com
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