TPS60230
SLVS516A – MAY 2004 – REVISED JUNE 2004
www.ti.com
PIN ASSIGNMENT
QFN PACKAGE
(TOP VIEW)
C2−
C1−
C1+
C2+
10
13
12
11
9
VIN
8
14
VOUT
PGND
15
GND
7
EN1
16
D1
6
EN2
1
2
3
4
5
D2
ISET
D5
D4
D3
DESCRIPTION
Terminal Functions
TERMINAL
NAME
C1+
C1–
C2+
C2–
D1-D5
EN1
NO.
10
11
9
12
6-2
15
I/O
–
–
–
–
I
I
Connect to the flying capacitor C1
Connect to the flying capacitor C1
Connect to the flying capacitor C2
Connect to the flying capacitor C2
Current sink input. Connect the cathode of the white LEDs to these inputs.
Enable input. A logic high enables the converter, logic low forces the device into shutdown mode reducing the
supply current to less than 1 µA if EN2 is tied to GND.
An applied PWM signal reduces the LED current as a function of the duty cycle of the PWM signal. EN1 and EN2
can be tied together for PWM dimming between 0 mA and the maximum set with ISET. EN1 and EN2 can also be
used for digital dimming with 4 steps from 0 mA to the maximum current set with ISET. See the application section
for more details.
Analog ground
Connect a resistor between this pin and GND to set the maximum current through the LEDs.
Power ground, connect with analog ground (GND)
Supply voltage input
Connect the output capacitor and the anode of the LEDs to this pin.
Connect with PGND and GND
EN2
GND
ISET
PGND
VIN
VOUT
Power
PAD
16
14
1
7
13
8
–
I
–
I
–
I
0
–
4
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