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LTC4100 数据表(PDF) 7 Page - Linear Technology

部件名 LTC4100
功能描述  Smart Battery Charger Controller
PDF  24 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC4100 数据表(HTML) 7 Page - Linear Technology

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LTC4100
7
sn4100 4100is
BLOCK DIAGRA
+
–
+
–
+
+
1.28V
1.19V
WATCHDOG
DETECT tON
OSCILLATOR
DCIN
PWM
LOGIC
S
R
Q
CA1
BUFFERED
ITH
gm = 1m
+
–
+
–
÷5
+
–
17mV
100mV
gm = 1m
gm = 1.5m
1.19V
1.2V
CLP
SMBus
INTERFACE
AND CONTROL
THERMISTER
INTERFACE
LIMIT
DECODER
ICMP
IREV
0V
VSET
BAT
CSP
IDC
ILIM
VLIM
ITH
ACP
DCDIV
PGND
CLN
CLP
DCIN
INFET
CHGEN
SMBALERT
SDA
SCL
THA
THB
GND
CLP
TGATE
BGATE
EA
CL1
5.8V
11-BIT
VDAC
10-BIT
IDAC
3k
9k
–
–
12
18
1
3
2
23
24
5
4
6
8
9
16
15
13
14
11
10
19
20
21
22
100
Ω
0.01
µF
0.1
µF
VBAT
VBAT
SW
SW
Q2
Q3
Q1
RCL
20
µF
D1
L1
VIN
VIN
7
10
µA
VDD
RSENSE
20
µF
RVLIM
RILIM
17 VDD
Figure 2.
TEST CIRCUIT
+
–
+
–
EA
VDAC
0.6V
LT1055
CSP
BAT VSET
ITH
LTC4100
1.19V
4100 TC01
PI FU CTIO S
CLN (Pin 23): Negative Input to the Input Current Limiting
Circuit Block. If no current limit function is desired, con-
nect this pin to CLP. The threshold is set at 100mV below
the voltage at the CLP pin. When used to limit supply
current, a filter is needed to filter out the switching noise.
CLP (Pin 24): Positive Input to the Input Current Limiting
Circuit Block. This pin also serves as a power supply for
the IC. Bypass to ground with a 1
µF capacitor.
V
VV
V
FOR V
V x
A
DCIN
V
TOL
BAT
VDAC
VDAC
VDAC
=
=
=
–
•
.(
)
100
17 56 0 44 0
21



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