Datasheet
GND OUT
NR/SS
1 2 3 4
5
6
IN
NC
EN
FB
7
OUT
NC
FB
NC
NC
IN
NR/SS
EN
NC
NC
GND
OUT
NC
6
1
2
3
4
5
15
14
13
12
11
20
NC
GND
NC
NC
NC
NC
INNC
7
19
8
18
9
17
10
16
Where:
V
OUT
R + R
1 2
³ 5 A, andm
V
OUT
V
REF
- 1R = R
1 2
TPS7A3301
OUT
FB
GND
C
10 F
IN
m
C
1 F
NR/SS
m
R
1
1.24 MW
R
2
105 kW
C
10 nF
FF
C
47 F
OUT
m
IN
EN
NR/SS
V
IN
V
OUT
= 15 V-
TPS7A33
SBVS169C –DECEMBER 2011–REVISED FEBRUARY 2013
www.ti.com
PARAMETRIC MEASUREMENT INFORMATION
TYPICAL APPLICATION CIRCUIT
Maximize PSRR Performance and Minimize RMS Noise
PIN CONFIGURATIONS
KC PACKAGE
RGW PACKAGE
TO-220-7
5-mm × 5-mm QFN-20
(TOP VIEW)
(TOP VIEW)
PIN DESCRIPTIONS
NO.
NAME KC RGW
(1)
DESCRIPTION
This pin turns the regulator on or off. If V
EN
≥ V
+EN_HI
or V
EN
≤ V
–EN_HI
, the regulator is enabled.
EN 1 13
If V
+EN_LO
≥ V
EN
≥ V
–EN_LO
, the regulator is disabled. The EN pin can be connected to IN, if not used. |V
EN
| ≤ |V
IN
|.
This pin is the input to the control-loop error amplifier. It is used to set the output voltage of the device. It is
FB 7 3 recommended to connect a 0.01-µF capacitor from FB to OUT (as close to the device as possible) to maximize ac
performance.
GND 4 7 Ground
Input supply. A capacitor greater than or equal to 10 nF must be tied from this pin to ground to assure stability. It is
recommended to connect a 10-µF capacitor from IN to GND (as close to the device as possible) to reduce circuit
IN 3 15, 16
sensitivity to printed-circuit-board (PCB) layout, especially when long input traces or high source impedances are
encountered.
2, 4-6, 8-12,
NC 5 This pin can be left open or tied to any voltage between GND and IN.
17-19
Noise reduction pin. A capacitor connected from this pin to GND controls the soft-start function and allows RMS noise to
NR/SS 2 14 be reduced to very low levels. It is recommended to connect a 1-µF capacitor from NR/SS to GND (as close to the
device as possible) to bypass the noise generated by the internal bandgap and maximize ac performance.
Regulator output. A capacitor greater than or equal to 10 µF must be tied from this pin to ground to assure stability. It is
OUT 6 1, 20 recommended to connect a 47-µF ceramic capacitor from OUT to GND (as close to the device as possible) to maximize
ac performance.
Tab Tab — TAB is internally connected to GND. An external heatsink can be installed to provide additional thermal performance.
(1) RGW is a product-preview device.
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