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STW41412 Datasheet(PDF) 6 Page - STMicroelectronics

Part # STW41412
Description  Single-coil dual-output step-down DC/DC converter for digital base band and multimedia processor supply
PDF  30 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STW41412 Datasheet(HTML) 6 Page - STMicroelectronics

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STw4141 pinout
STw4141
6/30
1
STw4141 pinout
Figure 1.
Pin assignment in TFBGA 3x3 mm - 16 bumps 0.5 mm pitch
PGND
PVDD
MODE/
SYNC
FB1
VLX1
STATE
AUTO
FB2
VLX2
VSEL
VDD
VOUT1
VOUT2
GND
EN
A
B
C
D
1
2
3
4
T_MODE
PGND
PVDD
MODE/
SYNC
FB1
VLX1
STATE
AUTO
FB2
VLX2
VSEL
VDD
VOUT1
VOUT2
GND
EN
1
2
3
4
A
B
C
D
T_MODE
Top view
Bottom view
12
3
4
A
B
C
D
A
B
C
D
43
2
1
Table 1.
STw4141 pin description
Pin
Symbol
Description
A1
PGND
Power ground
B1
PVDD
Power supply voltage
C1
MODE/SYNC
MODE/SYNC = High to forced PWM mode
MODE/SYNC = Low to forced PFM mode
MODE/SYNC = 600 kHz - 1.5 MHz external clock synchronization in PWM
D1
FB1
Feedback 1
A2
VLX1
External inductor connection pin 1
B2
STATE
Output STATE pin allow the user to monitor operation mode of the product
STATE = High - PFM mode
STATE = Low - PWM mode
If not used must be left unconnected.
C2
AUTO
PWM/PFM automatic switch control pin
AUTO = High - PWM/PFM mode automatic switch ENABLED
AUTO = Low - PWM/PFM mode automatic switch DISABLED
PWM/PFM mode controlled by MODE/SYNC pin)
D2
FB2
Feedback 2
A3
VLX2
External inductor connection pin 2
B3
T_MODE
Input signal for test mode selection. This pin must be connected to GND.
C3
VSEL
Voltage selection input
VSEL = High - VOUT1 = 1.8V, VOUT2 = 1.2V (valid for STA1)
VSEL = Low - VOUT1 = 1.8V, VOUT2 = 1.0V (valid for STA1)
(For other voltage options see
Table 1: STw4141 ordering information)
D3
VDD
Signal supply voltage
A4
VOUT1
Output voltage 1



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