AT1367A/B/C/D
Preliminary Product Information
1MHz, 800mA Synchronous Buck Converter
With Power Good Detector & LDO
Reflow Condition (IR/Convection or VPR Reflow)
Classification Reflow Profiles
Profile Feature
Sn-Pb Eutectic Assembly
Pb-Free Assembly
3°C/second max.
Average ramp-up rate
3°C/second max.
(T to T )
L
P
Preheat
-Temperature Min(Tsmin)
-Temperature Max (Tsmax)
-Time (min to max)(ts)
100°C
150°C
150°C
200°C
60-120 seconds
60-180 seconds
Time maintained above:
-Temperature (T )
L
183°C
217°C
60-150 seconds
60-150 seconds
-Time (t )
L
Peak/Classification Temperature(T )
See table 1
10-30 seconds
See table 2
10 seconds max.
P
Time within 5°C of actual Peak
Temperature (t )
P
Ramp-down Rate
6°C/second max.
6 minutes max.
6°C/second max.
8 minutes max.
Time 25°C to Peak Temperature
*All temperatures refer to topside of the package, measured on the package body surface.
Classification Reflow Profiles(Cont.)
Table 1. SnPb Entectic Process –Package Peak Reflow Temperatures
Package Thickness
<2.5mm
Volume mm3<350
240+0/-5℃
Volume mm3≥350
225+0/-5℃
≥2.5mm
225+0/-5℃
225+0/-5℃
Table 2. Pb-free Process –Package Classification Reflow Temperatures
Package Thickness
<1.6mm
Volume mm3<350
260+0℃
Volume mm3 350-2000
260+0℃
Volume mm3>2000
260+0℃
245+0℃
245+0℃
1.6mm - 2.5mm
≥2.5mm
260+0℃
250+0℃
250+0℃
245+0℃
*Tolerance: The device manufacturer/supplier shall assure process compatibility up to and
including the stated classification temperature (this means Peak reflow temperature +0˚С. For
example 260˚С+0˚С) at the rated MSL level.
7F, No.9, Park Avenue II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
Email: service@aimtron.com.tw
3/2/2006 REV:1.2
14
AIMTRON [ AIMTRON TECHNOLOGY ]
