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參數(shù)資料
| 型號： | LTC1998I |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 2.5uA, 1% Accurate SOT-23 Comparator and Voltage Reference for Battery Monitoring |
| 中文描述： | 2.5uA，1％精度，采用SOT - 23比較器和電池電壓參考監(jiān)測 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 143K |
| 代理商： | LTC1998I |
LTC1998
1
1998f
APPLICATIU
FEATURES
ThinSOT is a trademark of Linear Technology Corporation.
I
Lithium-Ion Battery-Powered Equipment
PDAs
Cell Phones
Handheld Instruments
Battery Packs
Pagers
Palm Top Computers
POS Terminals
I
High Accuracy Trip Voltage: 1% Max Error Using
External 1% Resistors
I
Adjustable Threshold Voltage and Hysteresis
I
Quiescent Current: 2.5
μ
A Typ
I
Output Swings Rail-to-Rail
I
Thresholds Programmable from 2.5V to 3.25V
I
Output State Guaranteed for V
BATT
≥
1.5V
I
Low Profile (1mm) ThinSOT
TM
Package
2.5
μ
A, 1% Accurate
SOT-23 Comparator and Voltage
Reference for Battery Monitoring
The LTC
1998 is a micropower comparator and a preci-
sion adjustable reference in a 6-pin SOT-23 package that
is optimized for lithium-ion low battery detection circuits.
The LTC1998 features a voltage detection circuit with an
adjustable threshold voltage and hysteresis. The thresh-
old voltage can be programmed from 2.5V to 3.25V with
two external resistors. A 10mV to 750mV hysteresis can
be added with a third external resistor.
A proprietary internal architecture maintains 1% thresh-
old voltage accuracy over temperature with low cost 1%
external resistors.
A separate power supply pin, V
LOGIC
, allows the battery-
low logic output to operate below the battery voltage,
allowing compatibility with low voltage microprocessors
without a pull-up resistor. Power supply glitches are
eliminated by preventing the cross-conducting current
which occurs when the output changes state.
The LTC1998 operates with battery or supply voltages up
to 5.5V and its battery-low output is valid for battery
voltages above 1.5V.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Threshold Voltage Error vs Temperature
DESCRIPTIOU
1998 BD
THRESHOLD
ADJUST
V
HYST.A
V
TH.A
BATT
V
LOGIC
BATTLO
1.1R
R
1.2V
BLOCK DIAGRA
W
TEMPERATURE (
°
C)
–45
15
55
1998
G05
–25
–5
35
75
95
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
%
V
SET BY 1%
EXTERNAL R,
THRESHOLD = 3V
V
=
1V
THRESHOLD = 3V
V
SHORTED
TO GROUND,
THRESHOLD = 2.5V
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| LTC1998IS6#TR | 功能描述:IC DETECT VOLT PR LOBATT SOT23-6 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 |
| LTC1998IS6#TRM | 功能描述:IC DET VOLT PROG LOBATT SOT23-6 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 |
| LTC1998IS6#TRMPBF | 功能描述:IC DETECT VOLT PR LOBATT SOT23-6 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 |
| LTC1998IS6#TRPBF | 功能描述:IC DETECT VOLT PR LOBATT SOT23-6 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 |
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