ATH30T033 Series —3.3-V Input
30-A, 3.3-V Input Non-Isolated
Wide-Output Adjust Power Module
REVISION 00 (30APR2004)
Features
•
Up to 30-A Output Current
•
3.3-V Input Voltage
•
Wide-Output Voltage Adjust
(0.8 V to 2.5 V)
•
135 W/in³ Power Density
•
Efficiencies up to 93 %
•
On/Off Inhibit
•
Pre-Bias Startup
•
Margin Up/Down Controls
•
Under-Voltage Lockout
•
Auto-Track™ Sequencing
•
Output Over-Current Protection
(Non-Latching, Auto-Reset)
•
Operating Temp: –40 to +85 °C
•
Over-T
emperature Shutdown
•
Safety Agency Approvals:
UL 1950, CSA 22.2 950, EN60950
VDE (Pending)
•
Point-of-Load Alliance (POLA)
Compatible
NOMINAL SIZE =
1.37 in x 1.12 in
(34,8 mm x 28,5 mm)
Description
The ATH30T033 is a series of high-
current non-isolated power modules.
The product is characterized by high effi-
ciencies, and up to 30 A of output current,
while occupying a mere 1.64 in² of PCB
area. In terms of cost, size, and perfor-
mance, the series provides OEM’s with a
flexible module that meets the require-
ments of the most complex and demanding
mixed-signal applications. These include
the most densly populated, multi-proces-
sor systems that incorporate high-speed
DSP’s, microprocessors, and ASICs.
The series uses double-sided surface
mount construction and provides high-
performance step-down power conversion
from a 3.3-V input bus voltage. The out-
put voltage of the ATH30T033 can be
set to any value over the range 0.8 V to
2.5 V, using a single resistor.
This series includes Auto-Track™.
Auto-Track simplifies power-up and
power-down supply voltage sequencing
in a system by enabling modules to track
each other, or any other external voltage.
Each model also includes an on/off
inhibit, output voltage adjust (trim), and
margin up/down controls. An output
voltage sense ensures tight load regulation,
and an output over-current and thermal
shutdown feature provide for protection
against external load faults.
Package options inlude both through-
hole and surface mount configurations.
Pin Configuration
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
Function
GND
V
in
GND
Inhibit *
V
o
Adjust
V
o
Sense
GND
V
out
V
out
GND
Track
Margin Down *
Margin Up *
* Denotes negative logic:
Open
= Normal operation
Ground = Function active
Standard Application
Track
Margin Down
Margin Up
13
1
12
11
10
k™
-Trac g
Auto ncin
e
Sequ
Rset = Required to set the desired output voltage
higher than 0.8 V (see spec. table for values).
Cin = Required 1,500 µF capacitor.
Cout = Optional 330 µF capacitor.
V
IN
2
PTH03030W
ATH30T033-9S
(Top View)
9
8
7
V
OUT
3
4
5
6
Inhibit
V
o
Sense
L
O
A
D
R
SET
0.5 %, 0.1 W
(Required)
GND
North America (USA): 1-888-41-ASTEC
Europe (UK): 44(1384)842-211
+
+
C
IN
1,500 µF
(Required)
C
OUT
330 µF
(Optional)
GND
Asia (HK): 852-2437-9662
ASTEC [ Astec America, Inc ]
