SI9130_11 Datasheet, PDF (7/15 Pages) Vishay Siliconix – Pin-Programmable Dual Controller - Portable PCs

PIN CONFIGURATION AND DESCRIPTION
Si9130
Vishay Siliconix
CS₃ 1
SS₃ 2
ON₃ 3
NC 4
NC 5
NC 6
3.6ADJ 7
3.45ADJ 8
GND 9
REF 10
SYNC 11
SHDN 12
ON₅ 13
SS₅ 14
28 FB3
27 DH₃
26 LX₃
25 BST₃
24 DL₃
23 V+
SSOP-28 ^{22 VL}
21 FB₅
20 PGND
19 DL5
18 BST5
17 LX₅
16 DH₅
15 CS₅
Top View
ORDERING INFORMATION
Standard
Lead (Pb)-free Temperature
Part Number Part Number
Range
V_OUT
Si9130CG
Si9130CG-T1 Si9130CG-T1-E3
Si9130LG
Si9130LG-T1 Si9130LG-T1-E3
0 to 70 °C
- 10 to 90 °C
5 V and 3.3 V
3.45 V or 3.6 V
Demo Board
Si9130DB
Temperature Range
0 to 70 °C
Board Type
Surface Mount
PIN DESCRIPTION
Pin Symbol
Description
1
CS₃ Current-sense input for 3.3 V Buck controller - this pins over current threshold is 100 mV with respect to FB₃.
2
SS₃ Soft-start input for 3.3 V. Connect capacitor from SS₃ to GND.
3
ON₃ ON/OFF logic input disables the 3.3 V Buck controller. Connect directly to V_L for automatic turn-on.
4
NC Not internally connected.
5
NC Not internally connected.
6
NC Not internally connected.
7
3.6 ADJ Control input to select 3.6 V output. See Voltage Selection Table for input and output combinations.
8
3.45 ADJ Control input to select 3.45 V output. See Voltage Selection Table for input and output combinations.
9
GND Analog ground.
10
REF 3.3 V reference output. Supplies external loads up to 5 mA.
Oscillator control/synchronization input. Connect capacitor to GND, 1 µF/mA output or 0.22 µF minimum. For external
11
SYNC clock synchronization, a rising edge starts a new cycle to start. To use internal 200 kHz oscillator, connect to V_L or GND.
For 300 kHz oscillator, connect to REF.
12
SHDN
Shutdown logic input, active low. Connect to V_L for automatic turn-on. The 5 V V_L supply will not be disabled in shutdown
allowing connection to SHDN.
13
ON₅ ON/OFF logic input disables the 5 V Buck Controller. Connect to V_L for automatic turn-on.
14
SS₅ Soft-start control input for 5 V Buck controller. Connect capacitor from SS₅ to GND.
15
CS₅ Current-sense input for 5 V Buck controller - this pins over current threshold is 100 mV referenced to FB₃.
16
DH₅ Gate-drive output for the 5 V supply high-side N-Channel MOSFET.
17
LX₅ Inductor connection for the 5 V supply.
18
BST₅ Boost capacitor connection for the 5 V supply.
19
DL₅ Gate-drive output for the 5 V supply rectifying N-Channel MOSFET.
20
PGND Power Ground.
21
FB₅ Feedback input for the 5 V Buck controller.
22
V_L
5 V logic supply voltage for internal circuitry - able to source 5 mA external loads. V_L remains on with valid voltage at V+.
23
V+ Supply voltage input.
24
DL₃ Gate-drive output for the 3.3 V supply rectifying N-Channel MOSFET.
25
BST₃ Boost capacitor connection for the 3.3 V supply.
26
LX₃ Inductor connection for the 3.3 V supply.
27
DH₃ Gate-drive output for the 3.3 V supply high-side N-Channel MOSFET.
28
FB₃ Feedback input for the 3.3 V Buck controller.
Document Number: 70190
www.vishay.com
S11-0975-Rev. G, 16-May-11
7
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000