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參數(shù)資料
| 型號： | LT1511 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Constant-Current/ Constant-Voltage 3A Battery Charger with Input Current Limiting |
| 中文描述： | 恒定電流/恒定電壓3A電池充電器輸入限流 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 145K |
| 代理商： | LT1511 |
2
LT1511
ABSOLUTE
AXI
U
RATINGS
W
(Note 1)
Supply Voltage
(V
MAX
, CLP and CLN Pin Voltage) ...................... 30V
Switch Voltage with Respect to GND...................... –3V
Boost Pin Voltage with Respect to V
CC
................... 25V
Boost Pin Voltage with Respect to GND ................. 57V
Boost Pin Voltage with Respect to SW Pin.............. 30V
V
C
, PROG, OVP Pin Voltage...................................... 8V
I
BAT
(Average)........................................................... 3A
Switch Current (Peak) .............................................. 4A
Operating Junction Temperature Range
Commercial...........................................0
°
C to 125
°
C
Industrial......................................... –40
°
C to 125
°
C
Operating Ambient Temperature
Commercial............................................ 0
°
C to 70
°
C
Industrial........................................... –40
°
C to 85
°
C
Storage Temperature Range................. –65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec)..................300
°
C
W
W
U
PACKAGE/ORDER I
FOR
ATIO
W
U
U
ORDER PART
NUMBER
LT1511CSW
LT1511ISW
T
JMAX
= 125
°
C,
θ
JA
= 30
°
C/W**
1
2
3
4
5
6
7
8
9
10
11
12
TOP VIEW
SW PACKAGE
24-LEAD PLASTIC SO WIDE
24
23
22
21
20
19
18
17
16
15
14
13
GND**
SW
BOOST
GND**
GND**
UV
GND**
OVP
CLP
CLN
COMP1
SENSE
GND**
GND**
V
CC1
*
V
CC2
*
V
CC3
*
PROG
V
C
UV
OUT
GND**
COMP2
BAT
SPIN
Consult factory for Military grade parts.
*ALL V
CC
PINS SHOULD
BE CONNECTED
TOGETHER CLOSE TO
THE PINS
**ALL GND PINS ARE
FUSED TO INTERNAL DIE
ATTACH PADDLE FOR
HEAT SINKING. CONNECT
THESE PINS TO
EXPANDED PC LANDS
FOR PROPER HEAT
SINKING. 30
°
C/W
THERMAL RESISTANCE
ASSUMES AN INTERNAL
GROUND PLANE
DOUBLING AS A HEAT
SPREADER
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. V
CC
= 16V, V
BAT
= 8V, V
MAX
(maximum operating V
CC
) = 28V,
R
S2
= R
S3
= 200
(see Block Diagram), V
CLN
= V
CC
. No load on any outputs unless otherwise noted.
The
G
denotes specifications which apply over the full operating
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Overall
Supply Current
V
PROG
= 2.7V, V
CC
≤
20V
V
PROG
= 2.7V, 20V < V
CC
≤
25V
8V
≤
V
CC
≤
25V , 0V
≤
V
BAT
≤
20V
R
PROG
= 4.93k
R
PROG
= 49.3k
T
J
< 0
°
C
V
CC
= 28V, V
BAT
= 20V
R
PROG
= 4.93k
R
PROG
= 49.3k
T
J
< 0
°
C
G
G
4.5
4.6
6.8
7.0
mA
mA
Sense Amplifier CA1 Gain and Input Offset Voltage
(With R
S2
= 200
, R
S3
= 200
)
(Measured across R
S1
)(Note 2)
G
G
95
8
7
100
10
105
12
13
mV
mV
mV
G
G
90
7
6
110
13
14
mV
mV
mV
V
CC
Undervoltage Lockout (Switch OFF) Threshold
Measured at UV Pin
G
6
7
8
V
UV Pin Input Current
0.2V
≤
V
UV
≤
8V
In Undervoltage State, I
UVOUT
= 70
μ
A
8V
≤
V
UV
, V
UVOUT
= 5V
V
BAT
≤
20V, V
UV
≤
0.4V
G
0.1
5
μ
A
UV Output Voltage at UV
OUT
Pin
G
0.1
0.5
V
UV Output Leakage Current at UV
OUT
Pin
G
0.1
3
μ
A
Reverse Current from Battery (When V
CC
Is
Not Connected, V
SW
Is Floating)
3
15
μ
A
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