TPS61040
TPS61041
SLVS413 – FEBRUARY 2002
DBV PACKAGE
(TOP VIEW)
SW
GND
FB
1
2
3
5
V
IN
4
EN
Ordering Information†
TA
–40 to 85°C
40
SWITCH CURRENT LIMIT
400 mA
250 mA
SOT23 PACKAGE (DBV)
TPS61040DBV
TPS61041DBV
PACKAGE MARKING
PHOI
PHPI
† The DBV package is available in tape & reel. Add “R” suffix (DBVR) to order quantities of 3000 parts. Add “T” suffix (DBVT) to order
quantities of 250 parts.
functional block diagram
SW
Under Voltage
Lockout
Bias Supply
400 ns Min
Off Time
Error Comparator
FB
–
+
VREF = 1.233 V
R
Current Limit
EN
6
µs
Max
On Time
Soft
Start
+
_
RSENSE
S
RS Latch
Logic
Gate
Driver
Power MOSFET
N-Channel
VIN
GND
Terminal Functions
TERMINAL
NAME
SW
GND
FB
EN
VIN
NO.
1
2
3
4
5
I
I
I
I/O
I
DESCRIPTION
Connect the inductor and the Schottky diode to this pin. This is the switch pin and is connected to the drain of the internal
power MOSFET.
Ground
This is the feedback pin of the device. Connect this pin to the external voltage divider to program the desired output
voltage.
This is the enable pin of the device. Pulling this pin to ground forces the device into shutdown mode reducing the supply
current to less than 1
µA.
This pin should not be left floating and needs to be terminated.
Supply voltage pin
2
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ETC [ ETC ]
