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參數(shù)資料
| 型號(hào)： | LTC1730-4 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Lithium-Ion Battery Pulse Charger(4.1V鋰離子電池脈沖充電器) |
| 中文描述： | 1 A BATTERY CHARGE CONTROLLER, PDSO16 |
| 封裝： | SSOP-16 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大小： | 166K |
| 代理商： | LTC1730-4 |
LTC1730-4/LTC1730-4.2
3
SYMBOL
V
CHRG
I
CHRG
T
TIMER
V
GATE
PARAMETER
CHRG Pin Output Low Voltage
CHRG Pin Pull-Down Current
TIMER Accuracy
GATE Pin Voltage
CONDITIONS
I
CHRG
= 5mA, Charging Mode
V
CHRG
= 1V, C/10 Mode
C
TIMER
= 0.1
μ
F
V
BAT
= 3V
V
BAT
= 4V
MIN
TYP
MAX
0.9
70
10
UNITS
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
V
10
40
μ
A
%
V
V
°
C
°
C
V
V
mV
7.5
10
140
5
3.8
2.05
50
3.5
45
0.7
T
SHDN
T
SHDN
V
RECHRG
V
NTC_HOT
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Recharge Battery Voltage Threshold
NTC/SHDN Pin Threshold Voltage (Hot)
Battery Voltage from High to Low
High to Low; V
CC
= 4V
Hysteresis
Low to High; V
CC
= 4V
Hysteresis
LTC173ECGN-4
LTC1730EGN-4, I
ACPR
= 5mA
LTC1730EGN-4, I
FAULT
= 3mA
3.6
1.95
G
2.04
V
NTC_COLD
NTC/SHDN Pin Threshold Voltage (Cold)
G
3.4
3.6
V
mV
V
SEL
V
ACPR
V
FAULT
SEL Pin Threshold
ACPR Pin Output Low Voltage
FAULT Pin Output Low Voltage
V
V
V
0.6
1.2
The
G
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
°
C. V
CC
= 6V unless otherwise noted.
DC ELECTRICAL CHARACTERISTICS
PIU
LTC1730ES8-4.2
SENSE (Pin 1):
Maximum Current Sense Input. A sense
resistor (R
SENSE
) should be connected from V
CC
to the
SENSE pin. When the voltage drop across R
SENSE
exceeds
100mV, the pass transistor is turned off immediately and
turns back on after a 400ms time-out period (C
TIMER
=
0.1
μ
F). The on-off cycle will continue, as long as the
overcurrent condition persists or until the timer runs out.
If overcurrent protection is not needed, short SENSE to
V
CC
.
V
CC
(Pin 2):
Positive Input Supply Voltage (4.5V
≤
V
CC
≤
13.2V). Bypass this pin with a 1
μ
F capacitor. An RC
network from the V
CC
pin to the GATE pin is required. The
capacitor controls the slew rate at the V
CC
pin, while the
resistor limits the inrush current when the input voltage is
applied. When the pass transistor is turned on, V
CC
will
ramp-down in a controlled manner, with a slope equal to
10
μ
A/C. When the pass transistor is turned off, V
CC
will
ramp-up with a slope of 40
μ
A/C.
CHRG (Pin 3):
Open-Drain Charge Status Output. When
the battery is being charged, the CHRG pin will be pulled
to ground by an N-MOSFET capable of driving an LED.
Once the duty cycle at the GATE pin drops to 10%, the
N-MOSFET is turned off and a weak 40
μ
A current source
to ground is turned on to indicate an end-of-charge (
C
/10)
condition. When a time-out occurs or the input supply is
removed, the CHRG pin goes into a high impedance state.
GND (Pin 4):
Electrical Ground Connection and provides
a thermal path from the IC to the PC board copper. Use
large copper pads and traces for maximum heat transfer.
TIMER (Pin 5):
Timer Set Pin. The timer period is set by a
capacitor (C
TIMER
) to ground. The timer period is:
t
TIMER
= (C
TIMER
3Hr)/(0.1
μ
F). The minimum ON time,
OFF time and the overcurrent time-out period are all set by
the same timer period.
NTC/SHDN (Pin 6):
Input to the NTC (Negative Tempera-
ture Coefficient) Thermistor Monitoring Circuits and Shut-
down Circuitry. With an external 10k
NTC thermistor to
Note 2:
The LTC1730-4/LTC1730-4.2 are guaranteed to meet performance
specifications from 0
°
C to 70
°
C. Specifications over the –40
°
C to 85
°
C
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
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PDF描述 |
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| LTC1730EGN-4 | Lithium-Ion Battery Pulse Charger with Overcurrent Protection |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1730EGN-4 | 功能描述:IC BATT PULSE CHRGR LI-ION16SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC1730EGN-4#PBF | 功能描述:IC BATT PULSE CHRGR LI-ION16SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC1730EGN-4#TR | 功能描述:IC BATT PULSE CHRGR LI-ION16SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC1730EGN-4#TRPBF | 功能描述:IC BATT PULSE CHRGR LI-ION16SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC1730ES8-4.2 | 功能描述:IC BATT PULSE CHRGR LI-ION 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
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