For technical support and further information, visit http://power.ti.com
PT6650 Series
5-A 12 /24-V Input Adjustable
Integrated Switching Regulator
SLTS038B -FEBRUARY 1999 - REVISED MARCH 2004
Specifications (Unless otherwise stated, T
a
=25 °C, V
in
=24 V, C
in
=560 µF, C
out
=330 µF, and I
o
=I
o
max)
PT6650 SERIES
Characteristic Symbol Conditions Min Typ Max Units
Output Current I
o
Over V
in
range V
o
≤12 V 0.1
(1)
—5
(2)
A
V
o
=15 V 0.1
(1)
—4
(2)
Input Voltage Range V
in
I
o
(min) ≤ I
o
≤ I
o
(max) V
o
< 6 V 9 — 28
V
V
o
> 6 V V
o
+ 3 — 28
Output Voltage Tolerance ∆V
o
Over V
in
range
V
o
–0.1 — V
o
+0.1 V
T
a
= –40 °C to 65 °C
Output Voltage Adjust Range V
o
adj Pin 14 to V
o
or ground V
o
= 3.3 V 2.2 — 4.7
V
o
= 2.5 V 1.8 — 4.3
V
o
= 5 V 3 — 6.5
V
V
o
= 9 V 6 — 10.2
V
o
= 12 V 9 — 13.6
V
o
= 15 V 10 — 17
Line Regulation Reg
line
9 V ≤ V
in
≤ 28 V — ±0.5 ±1 %V
o
Load Regulation Reg
load
0.1 ≤ I
o
≤5 A — ±0.5 ±1 %V
o
V
o
Ripple (pk-pk) V
r
20 MHz bandwidth V
o
< 6 V — 50 — mV
pp
V
o
> 6 V — 1 — %V
o
Transient Response t
tr
0.15 A/µs load step, 50% to 100% I
o
max — 100 — µSec
with C2 = 330µF V
tr
V
o
over/undershoot — 100 — mV
Efficiency η I
o
=50 % I
o
max V
o
= 3.3 V — 81 —
V
o
= 2.5 V — 76 — %
V
o
= 5 V — 85 —
I
o
= I
o
max V
o
= 3.3 V — 80 —
V
o
= 2.5 V — 75 — %
V
o
= 5 V — 84 —
Switching Frequency ƒ
s
9 V ≤ V
in
≤ 28 V 500 550 600 kHz
On/Off Standby (Pin 3) Referenced to GND
Input High Voltage V
IH
1 — Open
(3)
V
Input Low Voltage V
IL
–0.1 — 0.3
Input Low Current I
IL
— –0.25 – mA
Standby Input Current I
in
standby pin 3 to GND — 15 30 mA
External Output Capacitance C
out
330 — 3,000 µF
External Input Capacitance C
in
560
(4)
——µF
Operating Temperature Range T
a
Over V
in
range –40 — 85
(2)
°C
Solder Reflow Temperature T
reflow
Surface temperature of module pins or case — — 215
(5)
°C
Storage Temperature T
s
— –40 — 125 °C
Reliability MTBF Per Bellcore TR-332
7.2 — — 10
6
Hrs
50% stress, T
a
=40 °C, ground benign
Mechanical Shock — Per Mil-Std-883D, method 2002.3,
— 500 — G’s
1ms, half-sine, mounted to a fixture
Mechanical Vibration — Mil-Std-883D, Method 2007.2,
— 7.5 — G’s
20-2000Hz, soldered in PCB
Weight — Case styles P, D, & E — 12.5 —
Case styles R, G, & B — 16.5 —
grams
Case styles L & M — 15.5 —
Case styles F & Q — 22 —
Flammability — Materials meet UL 94V-0
Notes: (1) The ISR will operate at no load with reduced specifications.
(2) See Safe Operating Area curves or contact the factory for the appropriate derating.
(3) The STBY* control (pin 3) has an internal pull-up and if it is left open circuit the module will operate when input power is applied. The open-circuit
voltage is typcially 1.5 V. Consult the related application note for other interface considerations.
(4) The module requires a 560µF electrolytic capacitor at the input and 330µF at the output for proper operation in all applications. In addition, the input
capacitance, Cin, must be rated for a minimum of 1.2 Arms of ripple current. For transient or dynamic load applications additional capacitance may be
necessary. For more information consult the related application note on capacitor recommendations.
(5) During solder reflow of SMD package version do not elevate the module case, pins, or internal component temperatures above a peak of 215°C. For
further guidance refer to the application note, “Reflow Soldering Requirements for Plug-in Power Surface Mount Products,” (SLTA051).
