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ATH18K12 Datasheet

  • ATH18K12

  • 18-A, 12-V Input Non-Isolated Wide-Output Adjust Power Modul...

  • 13頁

  • ASTEC

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ATH18K12 Series 鈥?2-V Input
18-A, 12-V Input Non-Isolated
Wide-Output Adjust Power Module
REVISION 00 (30SEP2003)
Features
NOMINAL SIZE =
1.5 in x 0.87 in
(38,1 mm x 22,1 mm)
鈥?/div>
Up to 18 A Output Current
鈥?/div>
12-V Input Voltage
鈥?/div>
Wide-Output Voltage Adjust
(1.2 V to 5.5 V)
鈥?/div>
Efficiencies up to 95 %
鈥?/div>
195 W/in魯 Power Density
鈥?/div>
On/Off Inhibit
鈥?/div>
Output Voltage Sense
鈥?/div>
Margin Up/Down Controls
鈥?/div>
Under-Voltage Lockout
鈥?/div>
Auto-Track鈩?Sequencing
鈥?/div>
Output Over-Current Protection
(Non-Latching, Auto-Reset)
鈥?/div>
Over-Temperature Protection
鈥?/div>
Surface Mountable
鈥?/div>
Operating T
emp: 鈥?0 to +85 擄C
鈥?/div>
DSP Compatible Output Voltages
鈥?/div>
IPC Lead Free 2
鈥?/div>
Point-of-Load Alliance (POLA)
Compatible
The ATH18K12 series of non-isolated
power modules offers OEM designers a
combination of high performance, small
footprint, and industry leading features.
As part of a new class of power modules,
these products provide designers with the
flexibility to power the most complex
multi-processor digital systems using
off-the-shelf catalog parts.
The series employs double-sided surface
mount construction and provides high-
performance step-down power conversion
for up to 18 A of output current from a
12-V input bus voltage. The output volt-
age of the ATH18K12 can be set to any
value over the range, 1.2 V to 5.5 V, using
a single resistor.
Description
This series includes Auto-Track鈩?
Auto-Track鈩?simplifies the task of supply
voltage sequencing in a power system by
enabling modules to track each other, or
any external voltage, during power up and
power down.
Other operating features include an
on/off inhibit, output voltage adjust (trim),
and margin up/down controls. To ensure
tight load regulation, an output voltage
sense is also provided. A non-latching
over-current trip and over-temperature
shutdown provides load fault protection.
Target applications include complex
multi-voltage, multi-processor systems
that incorporate the industry鈥檚 high-speed
DSPs, micro-processors and bus drivers.
Pin Configuration
Pin
1
2
3
4
5
6
7
8
9
10
Function
GND
V
in
Inhibit *
V
o
Adjust
V
o
Sense
V
out
GND
Track
Margin Down *
Margin Up *
* Denotes negative logic:
Open
= Normal operation
Ground = Function active
k鈩?/div>
-Trac g
Auto ncin
e
Sequ
Standard Application
Track
Margin Down
Margin Up
10
1
9
8
7
R
set
= Resistor to set the desired output
voltage (see spec. table for values).
Cin = Required electrolytic 560 碌F
Cout = Optional 330 碌F electrolytic
ATH18K12-9S
PTH12020W
V
IN
(Top View)
2
6
V
OUT
3
4
5
Inhibit
R
SET
(Required)
0.1 W, 1 %
V
o
Sense
L
O
A
D
GND
North America (USA): 1-888-41-ASTEC
Europe (UK): 44(1384)842-211
+
C
IN
560 碌F
(Required)
C
OUT
330 碌F
(Optional)
GND
+
Asia (HK): 852-2437-9662

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