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参数资料
| 型号： | LTC4069EDC-4.4#TRMPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封装： | 2 X 2 MM, LEAD FREE, PLASTIC, MO-229WCCD-2, DFN-6 |
| 文件页数： | 14/16页 |
| 文件大小： | 192K |
| 代理商： | LTC4069EDC-4.4#TRMPBF |
7
LTC4069-4.4
406944f
Figure 1. LTC4069-4.4 Block Diagram
OPERATIO
U
The LTC4069-4.4 is a linear battery charger designed
primarily for charging single-cell lithium-ion batteries.
Featuring an internal P-channel power MOSFET, the charger
uses a constant-current/constant-voltage charge algo-
rithm with programmable current. Charge current can be
programmed up to 750mA with a final float voltage accu-
racy of
±0.6%. The CHRG open-drain status output indi-
cates if C/10 has been reached. No blocking diode or
external sense resistor is required; thus, the basic charger
circuit requires only two external components. An internal
termination timer and trickle charge low-battery condi-
tioning adhere to battery manufacturer safety guidelines.
Furthermore, the LTC4069-4.4 is capable of operating
from a USB power source.
An internal thermal limit reduces the programmed charge
current if the die temperature attempts to rise above a
preset value of approximately 115
°C. This feature protects
the LTC4069-4.4 from excessive temperature and allows
the user to push the limits of the power handling capability
of a given circuit board without risk of damaging the
LTC4069-4.4 or external components. Another benefit of
the LTC4069-4.4 thermal limit is that charge current can
be set according to typical, not worst-case, ambient tem-
–
+
–
+
–+
2
+
MP
M2
1
×
M1
1000
×
VCC
R1
R2
ENABLE
R3
R4
R5
2.9V
CHRG
6
PROG
1
GND
4069 F01
RPROG
BAT
1V
PROG
C/10
C1
–
+
TA
TDIE
115
°C
0.1V
1.2V
SUSPEND
D3
TOO
HOT
TOO
COLD
NTC_EN
0.1V
D2
3.6V
D1
1.2V
–+
REF
CA
MA
LOBAT
5
R7
NTC
R8
R9
R10
VCC
–
+
UVLO
3
4
BAT
LOGIC
COUNTER
OSCILLATOR
CHARGE CONTROL
–+
–
+
C3
–
+
C2
C5
VA
4V
–
+
SHUTDOWN
SUSPEND
OR
AND
RNOM
RNTC
C4
SI
PLIFIED
W
BLOCK DIAGRA
W
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4069EDC-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Standalone 750mA Li-Ion Battery Charger in 2 × 2 DFN with NTC Thermistor Input |
| LTC4069EDC-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Standalone 750mA Li-Ion Battery Charger in 2 × 2 DFN with NTC Thermistor Input |
| LTC4070 | 制造商:LINEAR 制造商全称:LINEAR 功能描述:Ultralow Voltage Step-Up Converter and Power Manager |
| LTC4070EDDB | 制造商:LINER 制造商全称:Linear Technology 功能描述:Li-Ion/Polymer Shunt Battery Charger System |
| LTC4070EDDB#PBF | 制造商:Linear Technology 功能描述:Battery Charger Li-Ion/Li-Pol 50mA 4.2V 10-Pin DFN EP Bulk 制造商:Linear Technology 功能描述:IC BATTERY CHARGER 50mA DFN-8 制造商:Linear Technology 功能描述:IC, BATTERY CHARGER, 50mA, DFN-8 制造商:Linear Technology 功能描述:IC, BATTERY CHARGER, 50mA, DFN-8; Battery Type:Li-Ion, Li-Polymer; Battery Charge Voltage:4.2V; Charge Current Max:50mA; Battery IC Case Style:DFN; No. of Pins:8; No. of Series Cells:1; Operating Temperature Min:-40C ;RoHS Compliant: Yes |
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