Si9139 Datasheet, PDF (2/17 Pages) Vishay Siliconix – Multi-Output, Individual On/Off Control Power-Supply Controller

Si9139
Vishay Siliconix
New Product
ABSOLUTE MAXIMUM RATINGS
V_IN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +36 V
P_GND to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±2 V
V_L to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.5 V
BST_A, BST_B, BST_C to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to +36 V
V_L Short to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
LX_A to BST_A; LX_B to BST_B; LX_C to BST_C . . . . . . . . . . . . . . . . . -6.5 V to 0.3 V
Inputs/Outputs to GND
(CS_A, CS_B, CSP, CSN) . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to (V_L +0.3 V)
RESET, ON_A, ON_B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to +5.5 V
DL_A, DL_B, DL_C to PGND . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to (V_L +0.3 V)
DH_A to LX_A, DH_B to LX_B,
DH_C to LX_C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to (BST_x +0.3 V)
Continuous Power Dissipation (T_A = 70_C)^a
28-Pin SSOP^b . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 762 mW
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . -40 _C to 85_C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . -40 _C to 125_C
Lead Temperature (Soldering, 10 Sec.) . . . . . . . . . . . . . . . . . . . . . . . . . . 300_C
Notes
a. Device mounted with all leads soldered or welded to PC board.
b. Derate 9.52 mW/_C above 70_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.
SPECIFICATIONS
Parameter
Buck Controller A
Total Regulation (Line, Load, and Temperature)
Line Regulation
Load Regulation
Current Limit
Bandwidth
Phase Margin
Minimum Duty Cycle
Buck Controller B
Total Regulation (Line, Load, and Temperature)
Line Regulation
Load Regulation
Current Limit
Bandwidth
Phase Margin
Minimum Duty Cycle
Auxiliary Controller C
Total Regulation (Line, Load, and Temperature)
Output Voltage Set to 12 V
Line Regulation
Load Regulation
Current Limit
Bandwidth
Phase Margin
Current-Sense Common Mode Voltage Range
Feedback Input Voltage Range
Minimum Duty Cycle
Maximum Duty Cycle
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2
Test Conditions
V_IN = 15 V , I_VL = I_REF = 0 mA
T_A = -40_C to 85_C, All Controllers ON
Min^a
Limits
Typ^b
Max^a
Unit
V_IN = 4.5 V to 30 V, 0 < V_CS3 - V_FB3 < 90 mV
-3
V_IN = 6.0 V to 30 V
V_IN = 4.5 V to 30 V
0 < V_CS3 - V_FB3 < 90 mV
0
3
±0.5
%
±1.0
±0.5
V_CSA - V_FBA
V_OUT > 2.5 V
90
125
160
mV
V_OUT < 2.5 V
100
180
L = 10 mH, C = 330 mF
50
kHz
R_SENSE = 20 mW
65
_
7
%
V_IN = 4.5 V to 30 V, 0 < V_CS5 - V_FB5 < 90 mV
-3
0
3
V_IN = 6.0 V to 30 V
V_IN = 4.5 V to 30 V
±0.5
%
±1.0
0 < V_CSB - V_FBB < 90 mV
±0.5
V_CSB - V_FBB
V_OUT > 2.5 V
90
125
160
mV
V_OUT < 2.5 V
100
180
L = 10 mH, C = 330 mF
50
kHz
R_SENSE = 20 mW
65
_
7
%
V_IN = 4.5 V to 30 V, 0 < V_CSP - V_CSN < 300 mV
R₅ = 26.4 kW, R₆ = 10 kW (See Figure 1)
-5
0
5
V_IN = 6.0 V to 30 V
V_IN = 4.5 V to 30 V
±0.5
%
±1.0
0 < V_CSP - V_FBN < 300 mV
±0.5
V_CSP - V_CSN
280
360
450
mV
L = 10 mH, C = 100 mF
10
kHz
R_SENSE = 100 mW, C_comp = 120 pF
65
_
0.0
2.1
V
0.0
2.1
V_IN = 5 V
7
%
85
Document Number: 71841
S-22317—Rev. A, 16-Dec-02