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參數(shù)資料
| 型號： | SC804 |
| 廠商： | Semtech Corporation |
| 英文描述： | Fully Integrated Lithium-Ion Battery Charger System with Timer |
| 中文描述： | 完全集成的鋰離子電池充電器系統(tǒng)的計時器 |
| 文件頁數(shù)： | 6/21頁 |
| 文件大?。?/td> | 548K |
| 代理商： | SC804 |
14
2007 Semtech Corp.
www.semtech.com
SC804
PRELIMINARY
POWER MANAGEMENT
FLAG
ON
OFF
CPB
UVLO < VCC < OVP
Input out of range
CHRGB
IOUT > ITERM
IOUT < ITERM
OVPB
VCC > OVP
VCC < OVP
FLTB
VCC > OVP
VCC UVLO
NTC Temp Fault
Pre-Charge Time-out
(OT (Tj > 150°C)
Normal Operation
or NTC Disable
Applications Information (Cont.)
Charge Mode Timing Diagram
VCC
VOUT
IOUT
CPB
CHRGB
TIMER
FLTB
NTC
UVLO
2.8V
Pre- Charge
Soft Start
Fast Charge
Termination
Current
Re- Charge
Threshold
CC Mode
CV Mode
On
Off
Fault
Hold
Figure 5 - Charge Mode Timing
The CHRGB output indicates the charging status. When
the output current is greater than ITERM, CHRGB is low.
CHRGB is high impedance when IOUT is less than ITERM.
The CHRGB output is latched during the charge cycle when
the output current is less than ITERM. This latch is reset
when the battery enters a recharge cycle, or if NTC or VCC
are toggled.
The OVPB signal is an active-low output that signals when
the input voltage exceeds the OVP threshold. When the
voltage on VCC is less than the OVP threshold voltage this
output is high impedance. The FLTB output is activated
when the SC804 experiences a fault condition. This out-
put can be used to notify the system controller of a fault
condition when connected to an interrupt input, or it can
be used like CPB and CHRGB to drive an indicator LED.
The ve fault modes signaled by FLTB are: input over-volt-
age, input under-voltage, NTC temperature out of range,
max die temperature (OT), and pre-charge time-out. When
any of these conditions occurs the FLTB output goes low;
otherwise it remains high impedance.
Capacitor Selection
Low cost, low ESR ceramic capacitors such as the X5R
and X7R dielectric material types are recommended for
use with the SC804. The output capacitance range is 1μF
to 4.7μF. The input capacitor is typically between 0.1μF to
1μF, but Charge Mode Timing Diagram larger values will
not degrade performance.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC804A | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Fully Integrated 4.4V Lithium-Ion Battery Charger System with Timer |
| SC804AMLTRT | 功能描述:IC LI-ION BATT CHARGER 16-MLPQ RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
| SC804EVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Fully Integrated 4.4V Lithium-Ion Battery Charger System with Timer |
| SC804IML.TRT | 功能描述:IC LI-ION BATTERY CHRGR 16MLPQ RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
| SC804IMLTRT | 制造商:Semtech Corporation 功能描述:Battery Charger Li-Ion 1500mA 4.2V 16-Pin MLPQ EP T/R |
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