Analog Devices ADP1148-5 Manuale Utente
–3–
REV. A
ADP1148, ADP1148-3.3, ADP1148-5
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Conditions
2
Min
Typ
Max
Units
FEEDBACK VOLTAGE
ADP1148 Only
V
10
V
IN
= 9 V
1.20
1.25
1.30
V
REGULATED OUTPUT VOLTAGE
V
OUT
V
IN
= 9 V
ADP1148-3.3
I
LOAD
= 700 mA
3.17
3.33
3.4
V
ADP1148-5
I
LOAD
= 700 mA
4.85
5.05
5.2
V
INPUT DC SUPPLY CURRENT
3
I
Q
Normal Mode
V
IN
= 4 V < V
IN
< 18 V
1.6
2.6
mA
Sleep Mode (ADP1148-3)
V
IN
= 4 V < V
IN
< 18 V
160
280
µ
A
Sleep Mode (ADP1148-5)
V
IN
= 6 V < V
IN
< 18 V
160
280
µ
A
Shutdown
V
SHUTDOWN
= 2.1 V,
10
24
µ
A
4 V < V
IN
< 12 V
CURRENT SENSE THRESHOLD
VOLTAGE
4
V
8
–V
7
ADP1148 Only
V
9
= V
OUT
/4 + 25 mV (Forced),
0
mV
V
7
= 5 V
V
9
= V
OUT
/4 – 25 mV (Forced),
115
150
175
mV
V
7
= 5 V
ADP1148-3.3
V
7
= V
OUT
+ 100 mV (Forced)
0
mV
V
7
= V
OUT
– 100 mV (Forced)
115
150
175
mV
ADP1148-5.0
V
7
= V
OUT
+ 100 mV (Forced)
0
mV
V
7
= V
OUT
– 100 mV (Forced)
115
150
175
mV
SHUTDOWN PIN THRESHOLD
V
10
ADP1148-3.3, ADP1148-5
0.55
0.8
2
V
OFF-TIME
t
OFF
C
T
= 390 pF, I
LOAD
= 700 mA
4
5
6.2
µ
s
NOTES
1
All limits at temperature extremes are guaranteed via correlation using standard Quality Control method.
2
T
J
is calculated from the ambient temperature T
A
and power dissipation P
D
according to the following formulas:
ADP1148AR, ADP1148AR-3, ADP1148AR-5: T
J
= T
A
+ (P
D
×
110
°
C/W)
ADP1148AN, ADP1148AN-3, ADP1148AN-5: T
J
= T
A
+ (P
D
×
70
°
C/W)
3
Dynamic supply current is higher due to the gate charge being delivered at the switching frequency. The allowable operating frequency may be limited by power
dissipation at high input voltages.
4
The ADP1148 version is tested with external feedback resistors setting the nominal output voltage to 3.3 V.
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage (Pin 3) . . . . . . . . . . . . . –0.3 V to +20 V
Continuous Output Currents (Pins 1, 14) . . . . . . . . . . 50 mA
Sense Voltages (Pins 7, 8) . . . . . . . . . . . . . . . . –0.3 V to V
Continuous Output Currents (Pins 1, 14) . . . . . . . . . . 50 mA
Sense Voltages (Pins 7, 8) . . . . . . . . . . . . . . . . –0.3 V to V
CC
Operating Temperature Range . . . . . . . . . . . . 0
°
C to +70
°
C
Extended Commercial Temperature Range . . –40
°
C to +85
°
C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . 150
°
C
Storage Temperature Range . . . . . . . . . . . . –65
°
C to +150
°
C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . 300
°
C
(–40
8C
≤
T
A
≤
+85
8C,
1
V
IN
= 10 V, V
SHUTDOWN
= 0 V, unless otherwise noted. See Figure 17.)
ORDERING GUIDE
Output
Package
Package
Model
Voltage
Description
Option
ADP1148AN
ADJ
Plastic DIP
N-14
ADP1148AR
ADJ
Small Outline Package SO-14
ADP1148AN-3.3
3.3 V
Plastic DIP
N-14
ADP1148AR-3.3
3.3 V
Small Outline Package SO-14
ADP1148AN-5
5 V
Plastic DIP
N-14
ADP1148AR-5
5 V
Small Outline Package SO-14