AIC1639
3-PIN ONE-CELL STEP-UP DC/DC CONVERTER
SPEC NO: DS-1639-00 05/26/00
n
TYPICAL
PERFORMANCE CHARACTERISTICS
(CONTINUED)
AIC1639 EXT "L" On-Resistance
130
120
110
400
360
AIC1639 EXT "H" On-Resistance
Resistance (Ù )
90
80
70
60
50
40
-40
-20
0
20
40
60
80
100
Resistance (Ù )
100
V
OUT
= 2.7V
V
OUT
= 3.0V
V
OUT
= 3.3V
V
OUT
= 5.0V
320
280
240
200
160
120
80
40
-40
V
OUT
= 2.7V
V
OUT
= 3.0V
V
OUT
= 3.3V
V
OUT
= 5.0V
-20
0
20
40
60
80
100
Temperature (
°
C)
Temperature (
°
C)
■
BLOCK DIAGRAM
VOUT
1M
1.25V REF .
-
+
EXT
E nable
GND
OSC, 100KHz
■
PIN DESCRIPTIONS
PIN1 : GND - Ground. Must be low impedance;
sorder directly to ground plane.
PIN2 : VOUT - IC supply pin. Connect VOUT to
the regulator output.
EXT – Push Pull driver output for external
power switch.
ANALOG INTEGRATIONS CORPORATION
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C.
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
7
AIC [ ANALOG INTERGRATIONS CORPORATION ]
