Datasheet

3
LTC1262
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
PI FU CTIO S
U
UU
V
OUT
(Pin 6): 12V Output. Connect a 4.7µF bypass capaci-
tor C
OUT
to ground. When in the shutdown mode V
OUT
=
V
CC
.
GND (Pin 7): Ground.
SHDN (Pin 8): Logic Level Shutdown Pin. Application of a
logic low at SHDN pin will place the regulator in normal
operation. With no external connection, or with SHDN tied
to V
CC
, the device will be put into shutdown mode. Connect
to GND for normal operation. In shutdown mode the
charge pump is turned off and V
OUT
= V
CC
.
Efficiency vs Output Current
Shutdown Supply Current
vs Temperature
Output Voltage vs Output Current
C1
–
(Pin 1): C1 Negative Input. Connect a 0.22µF capaci-
tor C1 between C1
+
and C1
–
.
C1
+
(Pin 2): C1 Positive Input. Connect a 0.22µF capaci-
tor C1 between C1
+
and C1
–
.
C2
–
(Pin 3): C2 Negative Input. Connect a 0.22µF capaci-
tor C2 between C2
+
and C2
–
.
C2
+
(Pin 4): C2 Positive Input. Connect a 0.22µF capaci-
tor C2 between C2
+
and C2
–
.
V
CC
(Pin 5): Positive Supply Input Where 4.75V ≤ V
CC
≤ 5.5V. Connect a 4.7µF bypass capacitor C
IN
to ground.
Supply Current vs Supply Voltage
SUPPLY VOLTAGE (V)
4.5
480
SUPPLY CURRENT (µA)
500
520
540
560
600
4.75
5.0 5.25 5.5
LTC1262 G03
5.75 6.0
580
T
A
= 70°C
I
OUT
= 0
T
A
= 25°C
T
A
= 0°C
OUTPUT CURRENT (mA)
0
55
EFFICIENCY (%)
60
65
70
75
85
10
20 30 40
LTC1262 G01
50
80
V
CC
= 4.75V
V
CC
= 5V
V
CC
= 5.5V
TEMPERATURE (°C)
–50
0
SHUTDOWN SUPPLY CURRENT (µA)
0.6
1.2
1.8
2.4
3.6
–25
02550
LTC1262 G02
75 100
3.0
V
CC
= 5V
OUTPUT CURRENT (mA)
0 5 10 15 20 25 30
35 40
45 50
OUTPUT VOLTAGE (V)
12.2
12.0
11.8
11.6
11.4
11.2
11.0
10.8
10.6
10.4
10.2


1262 G04

V
CC
= 4.75V
V
CC
= 5.5V
V
CC
= 5V