TLF50211EL_15 Datasheet, PDF (5/27 Pages) Marl International Limited – 2.2 MHz Step-Down Regulator 500 mA, 5 V, low quiescent current

TLF50211EL
3
Pin Configuration
3.1
Pin Assignment
Pin Configuration
N.C. 1
N.C. 2
N.C. 3
TLF50211EL
14 EN
13 VS
12 N.C.
SYNC
4
FREQ
5
N.C. 6
FB
7
Figure 2 Pin Configuration
11 SWO
10 GND
9 GND
PG-SSOP14
8 N.C.
3.2
Pin Definitions and Functions
Pin Symbol Function
1 N.C.
Not Connected.
Internally not connected. Leave open or connect to GND.
2 N.C.
Not Connected.
Internally not connected. Leave open or connect to GND.
3 N.C.
Not Connected.
Internally not connected. Leave open or connect to GND.
4 SYNC Synchronization Input
Connect to an external clock signal in order to synchronize/adjust the switching frequency. This
feature is not functionally in PFM mode.
5 FREQ Frequency Adjustment Pin
Connect an external resistor to GND to adjust the switching frequency, do not leave open. In
case the synchronization option is used, the resistor must be dimensioned close to the desired
synchronization frequency.
6 N.C.
Not Connected.
Internally not connected. Leave open or connect to GND.
7 FB
Feedback Input
Connect this pin directly to the output capacitor. Also input for internal power supply. The internal
power supply is taken from the output voltage.
8 N.C.
Not Connected.
Internally not connected. Leave open or connect to GND.
9 GND Ground
Connect this pin directly with low inductive and broad trace to ground, do not leave open.
10 GND
Ground
Connect this pin directly with low inductive and broad trace to ground, do not leave open.
Data Sheet
5
Rev. 1.0, 2013-06-19