ATH26K12 Datasheet, PDF (1/16 Pages) Astec America, Inc – 26-A, 12-V Input Non-Isolated Wide-Output Adjust Power Module

ATH26K12 Series - 12-V Input
26-A, 12-V Input Non-Isolated
Wide-Output Adjust Power Module
REVISION 00 (30APR2004)
NOMINAL SIZE = 1.37 in x 1.12 in
(34,8 mm x 28,5 mm)
Features
• Up to 26 A Output Current
• 12-V Input Voltage
• Wide-Output Voltage Adjust
(1.2 V to 5.5 V)
• Efficiencies up to 94 %
• 235 W/in³ Power Density
• On/Off Inhibit
• Output Voltage Sense
• Pre-Bias Startup
• Margin Up/Down Controls
• Dual-Phase Topology
• Auto-Track™ Sequencing
• Under-Voltage Lockout
• Output Over-Current Protection
(Non-Latching, Auto-Reset)
• Over-Temperature Protection
• Operating Temp: –40 to +85 °C
• Safety Agency Approvals:
UL 1950, CSA 22.2 950, EN60950
VDE (Pending)
• Point-of-Load Alliance (POLA)
Compatible
Description
The ATH26K12 is a series of high-
current non-isolated power module. This
product is characterized by high efficien-
cies, and up to 26 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 populat-
ed, multi-processor systems that
incorporate high-speed DSP’s, micropro-
cessors, and ASICs.
The series uses double-sided surface
mount construction and provides high-
performance step-down power conversion
from a 12-V input bus voltage. The out-
Standard Application
put voltage of the ATH26K12 can be set
to any value over the range, 1.2 V to
5.5 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 connfigurations.
Pin Configuration
Pin Function
1 GND
2 Vin
3 GND
4 Inhibit *
5 Vo Adjust
6 Vo Sense
7 GND
8 Vout
9 Vout
10 GND
11 Track
12 Margin Down *
13 Margin Up *
* Denotes negative logic:
Open = Normal operation
Ground = Function active
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Track
Margin Down
Margin Up
V_IN
Inhibit
GND
13 12 11
1
10
2
3
C_IN
560 µF
(Required)
AT^P(H^TTHo2_p16^2VK⁰ⁱ1_e3w02^W)-9S
9
8
7
456
V_o Sense
R_SET
1 %, 0.1 W
(Required)
Rset = Required to set the output voltage to a value
higher than 1.2 V. (See spec. table for values)
Cin = Required electrolytic 560 µF
Cout = Optional 330 µF electrolytic
V_OUT
L
O
C_OUT
A
D
330 µF
(Optional)
GND
North America (USA): 1-888-41-ASTEC
Europe (UK): 44(1384)842-211
Asia (HK): 852-2437-9662