SI9138 Datasheet, PDF (2/14 Pages) Vishay Siliconix – Multi-Output, Individual On/Off Control Power-Supply Controller

Si9138
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
BST₃, BST₅, BSTFY to GND . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +36 V
V_L Short to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
LX₃ to BST₃; LX₅ to BST₅; LXFY to BSTFY . . . . . . . . . . . . . . . –6.5 V to 0.3 V
Inputs/Outputs to GND
(CS₃, CS₅, CSP, CSN) . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to (V_L +0.3 V)
RESET, ON3, ON5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +5.5 V
DL3, DL5, DLFY to PGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to (V_L +0.3 V)
DH3 to LX₃, DH5 to LX₅,
DHFY to LXFY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to (BSTx +0.3 V)
Continuous Power Dissipation (T_A = 70_C)^a
28-Pin SSOP^b . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 762 mW
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0_C to 90_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
3.3-V Buck Controller
Total Regulation (Line, Load, and Temperature)
Line Regulation
Load Regulation
Current Limit
Bandwidth
Phase Margin
5-V Buck Controller
Total Regulation (Line, Load, and Temperature)
Line Regulation
Load Regulation
Current Limit
Bandwidth
Phase Margin
5- to 12-V Buck-Boost Controller
Total Regulation (Line, Load, and Temperature)
Output Voltage Set to 12 V
Line Regulation
Load Regulation
Current Limit
Bandwidth
Phase Margin
Internal Regulator
V_L Output
V_L Fault Lockout Voltage
V_L Fault Lockout Hysteresis
V_L /FB5 Switchover Voltage
V_L /FB5 Switchover Hysteresis
www.vishay.com
2
Test Conditions
V_IN = 15 V , I_VL = I_REF = 0 mA
T_A = 0_C to 90_C, All Controllers ON
V_IN = 6 to 30 V, 0 < V_CS3 – V_FB3 < 90 mV
V_IN = 6 to 30 V
0 < V_CS3 – V_FB3 < 90 mV
V_CS3 – V_FB3
L = 10 mH, C = 330 mF
R_SENSE = 20 mW
V_IN = 6 to 30 V, 0 < V_CS5 – V_FB5 < 90 mV
V_IN = 6 to 30 V
0 < V_CS5 – V_FB5 < 90 mV
V_CS5 – V_FB5
L = 10 mH, C = 330 mF
R_SENSE = 20 mW
V_IN = 6 to 30 V, 0 < V_CSP – V_CSN < 300 mV
R₅ = 26.4 kW, R₆ = 10 kW (See Figure 1)
V_IN = 6 to 30 V
0 < V_CSP – V_FBN < 300 mV
V_CSP – V_CSN
L = 10 mH, C = 100 mF
R_SENSE = 100 mW, C_comp = 120 pF
All Controllers OFF, V_IN >5.5 V, 0 <I_L <30 mA
V_L Falling Edge
FB₅ Rising Edge
Min^a
Limits
Typ^b
Max^a
Unit
3.22
3.32
3.42
V
±0.5
%
±0.5
90
125
160
mV
50
kHz
65
_
4.87
5.02
5.17
V
±0.5
%
±0.5
90
125
160
mV
50
kHz
65
_
11.4
12.0
12.6
V
±0.5
%
±0.5
330
410
500
mV
10
kHz
65
_
4.7
5.5
V
3.6
4.2
75
mV
4.2
4.7
V
75
mV
Document Number: 71446
S-20642—Rev. B, 13-May-02