STW4141 STMicroelectronics, STW4141 Datasheet - Page 6

• Manufacturer Part Number: STW4141
• Description: Single Coil Dual Output Step Down Dc/dc Converter For Digital Base Band And Multimedia Processor Supply
• Manufacturer: STMicroelectronics

A
B
C
D
STw4141 pinout
1
Figure 1.
Table 1.
6/30
A1
B1
C1
D1
A2
B2
C2
D2
A3
B3
C3
D3
A4
C
D
A
B
Pin
MODE/
PGND
PVDD
SYNC
FB1
1
1
PGND
PVDD
MODE/SYNC
FB1
VLX1
STATE
AUTO
FB2
VLX2
T_MODE
VSEL
VDD
VOUT1
STw4141 pinout
Pin assignment in TFBGA 3x3 mm - 16 bumps 0.5 mm pitch
STw4141 pin description
STATE
Symbol
AUTO
VLX1
2
FB2
2
Top view
T_MODE
VLX2
VSEL
VDD
3
3
Power ground
Power supply voltage
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
Feedback 1
External inductor connection pin 1
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.
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)
Feedback 2
External inductor connection pin 2
Input signal for test mode selection. This pin must be connected to GND.
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
Signal supply voltage
Output voltage 1
VOUT1
VOUT2
GND
4
EN
4
Table 1: STw4141 ordering information
Description
VOUT1
VOUT2
GND
4
EN
4
T_MODE
VLX2
VSEL
VDD
3
3
Bottom view
STATE
AUTO
VLX1
2
FB2
2
MODE/
PGND
PVDD
SYNC
1
FB1
1
)
STw4141
C
D
A
B
C
D
A
B