Technical Reference Note (APC08)
Centauri (APC08) Non-Isolated DC/DC Power Module
Tiny SMT Footprint – 1.8V-12V Input, 0.9V to 3.6V Output
The Centauri (APC08) DC-DC Power Module is a high efficiency non-isolated buck converter designed for use
in a wide variety of applications. It works from a wide input voltage range of 1.8V to 12V and offers an
extensive array of output voltages starting from 0.9V to 3.6V. Through careful layout and component selection
it achieves the highest efficiency/load in the smallest footprint available in the market today. It is ideal for
Point of Load applications and provides the most flexibility for the ever-changing DSP and ASIC power
requirements.
Electrical Parameters
Input
Input range
Input Surge
Efficiency
1.8-6.0VDC and 6.0-12.0VDC
13V
3.3V @ 93% Typ
Control
Enable TTL compatible (Positive Logic)
Output
Regulation
(Line, Load, Temp)
Industry Standard
0.53 X 1.3 X 0.29H SMT Package
Ripple and noise
Output voltage
adjust range
Transient Response
<3%
75mV - (≥2.5V Output)
≥
50mV - (<2.5V Output)
0.9V to 3.6V (J Version)
5% max deviation with
50% to 75% full load
500 µS (max) recovery
Special Features
•
•
•
•
•
•
•
•
•
•
•
Point of load (POL) applications
High efficiency, 3.3V@93% Typ
-40°C to +85°C Ambient Operating
Temperature
Open Frame SMT
Positive enable function
Low output ripple and noise
Regulation to zero load
Programmable Output from 0.9V to 3.6V
(External Trim Resistor)
Fixed frequency switching (400 KHz)
Power Good Signal (Optional)
Active Current share (Optional)
Environmental Specifications
•
•
•
Operating temperature: -40°C to +85°C
Storage temperature: -40°C to +125°C
MTBF: >1 million hours
Safety
Designed to meet:
UL, cUL
60950 Recognized
TUV
EN60950 Licensed
SHEET 1 OF 23
MODEL: APC08 SERIES
AUGUST 9, 2002 - REVISION 02
Technical Reference Note (APC08)
APC08 SERIES
THIS SPECIFICATION COVERS THE REQUIREMENTS
For A New 1.3" X 0.53" X 0.33”(H) Maximum 28W Single Output High efficiency Non-Isolated SMT DC-DC Converter
MODEL NAME
APC08J03
APC08K03
APC08M03
APC08Y03
APC08G03
APC08F03
APC08J08
APC08K08
APC08M08
APC08Y08
APC08G08
APC08F08
SIS CODE
APC08J03
APC08K03
APC08M03
APC08Y03
APC08G03
APC08F03
APC08J08
APC08K08
APC08M08
APC08Y08
APC08G08
APC08F08
Vin nominal/
Vin range
3.3V / 1.8-6.0V
3.3V / 1.8-6.0V
3.3V / 1.8-6.0V
3.3V / 2.2-6.0V
3.3V / 3.0-6.0V
5.0V / 4.0-6.0V
8V / 5.0-12.0V
8V / 5.0-12.0V
8V / 5.0-12.0V
8V / 5.0-12.0V
8V / 5.0-12.0V
8V / 5.0-12.0V
Vout/Iout
0.9V, 8A
1.2V, 8A
1.5V, 8A
1.8V, 8A
2.5V, 8A
3.3V, 8A
0.9V, 8A
1.2V, 8A
1.5V, 8A
1.8V, 8A
2.5V, 8A
3.3V, 8A
Options (suffix):
"-9"
= Trim
"-9MA" = Trim with Power Good and Active Current Share
"-J"
= Jedec tray-type packaging
MODEL: APC08 SERIES
AUGUST 9, 2002 - REVISION 02
SHEET 2 OF 23
Technical Reference Note (APC08)
Electrical Specifications
STANDARD TEST CONDITION
on a single unit, unless otherwise specified.
T
A
:
25°C (Ambient Air)
Vin (P1):
APC08x03
+1.8V to +6.0V
APC08x08
+5.0V to +12V
Enable (P5):
Open
Vo (P2):
Connect to load
Gnd (P3):
Return for Vin and Vo
Trim (P4):
Open
PGood (P6):
Open
P (P7):
Open
ABSOLUTE MAXIMUM RATINGS
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. Functional
operation of the device is not implied at these or in any other conditions in excess of those given in the operational
sections of the specs. Exposure to absolute maximum ratings for extended periods can adversely affect device
reliability.
Parameter
Input Voltage
Continuous
Transient (100ms)
Continuous
Transient (100ms)
Operating Temperature
Storage Temperature
Operating Humidity
Device
03
03
08
08
All
All
All
Symbol
V
IN
V
IN,trans
V
IN
V
IN,trans
T
A
T
STG
-
Min
1.8
-
5.0
-
-40
-40
-
Typ
-
-
-
-
-
-
-
Max
6.0
7.0
13.0
14.0
85
125
85
Unit
Vdc
Vdc
Vdc
Vdc
ºC
ºC
%
INPUT SPECIFICATIONS
Parameter
Operating Input Voltage
1
Maximum Input Current
2
(V
IN
= 0 to V
IN,max
; I
O
= I
O,max
)
Input Ripple Current
5Hz to 20MHz
Device
03
08
All
All
Symbol
V
IN
I
IN,max
I
IN-1
Min
1.8
5.0
-
-
Typ
3.3
8.0
-
200
Max
6.0
12.0
9.0
250
Unit
Vdc
Vdc
A
mAp-p
Note: 1. Minimum V
IN
(03 device) for 1V8, 2V5 and 3V3 versions are 2V2, 3V and 4V respectively.
2. This power module is not internally fused. The use of an input line fuse (03 Version: GMA-10A; 08
version: GMA-6A Bussman fuses or equivalent) is recommended.
MODEL: APC08 SERIES
AUGUST 9, 2002 - REVISION 02
SHEET 3 OF 23
Technical Reference Note (APC08)
OUTPUT SPECIFICATIONS
Parameter
Output Voltage Setpoint
(V
IN
=V
IN,min
to V
IN,max
at
I
O
=I
O,max
)
1
Device
APC08J03
APC08K03
APC08M03
APC08Y03
APC08G03
APC08F03
APC08J08
APC08K08
APC08M08
APC08Y08
APC08G08
APC08F08
All
All
All
≥
2.5V
< 2.5V
All
All
Symbol
V
O,SET
V
O,SET
V
O,SET
V
O,SET
V
O,SET
V
O,SET
V
O,SET
V
O,SET
V
O,SET
V
O,SET
V
O,SET
V
O,SET
-
-
-
Min
0.873
1.164
1.455
1.746
2.425
3.200
0.873
1.164
1.455
1.746
2.425
3.200
-
-
-
Typ
0.9
1.2
1.5
1.8
2.5
3.3
0.9
1.2
1.5
1.8
2.5
3.3
-
-
-
Max
0.927
1.236
1.545
1.854
2.575
3.400
0.927
1.236
1.545
1.854
2.575
3.400
0.5
0.5
±1.5
75
50
8
500
-
-
-
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
%
%
%
Output Regulation:
Line: V
IN
=V
IN,min
to V
IN,max
Load: I
O
=I
O,min
to I
O,max
Temp: T
A
= -40
°C
to 85
°C
Output Ripple and Noise
Peak to Peak: 5Hz to 20MHz
-
-
I
O
-
-
I
O
-
η
η
η
η
η
η
-
-
0
-
-
-
-
-
-
-
-
100
11.5
-
mV
PK-PK
mV
PK-PK
A
µF
mΩ
A
Output Current Range
External Load Capacitance
Capacitor ESR
Output Current Limit Inception
3
Output Short Circuit Current
4
Efficiency
V
IN
= 1.8V to 6V
1
I
O
= 8A Resistive Load
See Figures 7 -12 for related
curves at different input ranges
All
All
APC08J03
APC08K03
APC08M03
APC08Y03
APC08G03
APC08F03
74
80
83
85
89
90
76
81
86
88
91
93
-
-
-
-
-
-
%
%
%
%
%
%
Note: 3. This feature is only for module protection and is not intended for customer application. The value is
specified at 25C ambient air temperature. For other ambient air temperature, please refer to thermal
derating curve to determine corresponding current-limit inception values.
4. Pulse train with 90 ms period and 1ms pulse width. Average Iout equals about zero.
MODEL: APC08 SERIES
AUGUST 9, 2002 - REVISION 02
SHEET 4 OF 23
Technical Reference Note (APC08)
OUTPUT SPECIFICATIONS (Continued)
Parameter
Efficiency (continued)
V
IN
= 6V to 12V
I
O
= 8A Resistive Load
Device
APC08J08
APC08K08
APC08M08
APC08Y08
APC08G08
APC08F08
All
Symbol
η
η
η
η
η
η
-
∆I
O
/∆t
-
-
Min
71
75
77
81
85
87
-
Typ
76
81
84
86
90
92
400
Max
-
-
-
-
-
-
-
Unit
%
%
%
%
%
%
KHz
Switching Frequency
Dynamic Response:
Slew Rate
Load Change: 50% - 75%
I
O
,max
Peak Deviation Settling time
to V
O,nom
Load Change: 50% to 25% I
O,max
Peak Deviation Settling time
to V
O,nom
Turn-On time (Input to Output)
5
I
O
= 8A; V
IN
= V
IN,nom
Output Voltage Overshoot
Passive Resistive Full Load
All
All
All
-
-
-
0.1
5
500
-
10
-
A/µs
%V
O
µs
%V
O
µs
ms
All
All
-
-
-
-
5
500
10
-
All
-
-
-
50
All
-
-
5
-
%V
O
Note: 5. Input to Output Turn-On time is defined as the difference between t1 and t2: where t1 is the time
when the input voltage reaches the minimum V
IN
(V
IN
= V
IN,MIN
) and t2 is the time when the output
voltage reaches it's specified range (V
O
= V
O,SET-Min
).
MODEL: APC08 SERIES
AUGUST 9, 2002 - REVISION 02
SHEET 5 OF 23
