- 您现在的位置：买卖IC网 > Sheet目录233 > LT1701-7 (Power-One)AC-DC BATTERY CHARGER 54.5V 10A
T Series Data Sheet
?
Upper threshold level
The upper threshold level of the power down function is given.
The rectifier models have a relatively small hysteresis of 1 V to
prevent the signal from oscillation.
The battery chargers have a larger hysteresis. The upper level
is set at 2.05 V/cell.
To avoid deep discharge of the battery, the load should be
disconnected from the battery at the low level of the power
down signal. The battery voltage will then recover slowly up to
its chemical equilibrium, about 2 V/cell. The load may not be
connected again to the battery, until the T converter is
operating and charging it. Then the output voltage will be
higher than 2.05 V/cell.
High level of output signal D (pin 30):
500 Watt AC-DC Converters
06053
Vo+
D
Vo–
R ext
D set
Fig. 23
Power down function (D output)
– External adjustment of threshold level V t
– Signal electrically isolated by an external relay
06054
LT/UT1240:
LT/UT1840:
LT/UT1740:
24.6 V
49.2 V
43.9 V
±0.3 V
±0.5 V
±0.4 V
Vo+
D
R
red LED
V float
V Bat
Battery
06052a
Vo–
LED is "ON"
in case of
power down
2.05 V/cell
2.0 V/cell
recovery
Load switch ON
Hysteresis
Fig. 24
Remote indication of signal D by LED
Power Down
V t
Battery
low
Load switch OFF
t
06055
Vo+
+5 V
high
low
Z
Mains failure
Return of mains
Power down signal
t
D
Vo–
R
CMOS, TTL
Fig. 22
Hysteresis of D output signal for battery chargers with
corresponding level of Power Down signal
Fig. 25
Remote indication of the output voltage status (output D) by
CMOS/TTL interface (e.g., for data saving)
Signal output characteristics
Output D (pin 30) is an open-collector signal, referenced to
Vo–, protected by a 62 V Zener diode; it is well suited to drive
06056a
an external relay.
Under normal operating conditions ( V o > V t ), output D has low
impedance. If the output voltage drops below the power down
threshold level, output D becomes high impedance.
Table 12: Characteristics of power down functions
LT/UT
Vo+ 12
D 30
Vo– 22
10 k ?
0.5 W
Vi+
PSK/PSS/PSx
i
Gi–
Characteristics
Conditions
min
typ max
Unit
I D
Output
T C min – T C max
50 1
mA
sink current
V sat Saturation voltage I D = 50 mA
V z Zener voltage
62
0.2
V
Fig. 26
Output D signal used as inhibit to enable a system start-up in
the case of subsequently connected step-down converters
P z
Z-diode P Loss
T C = 95 °C
500
mW
PSK/PSS/PSx with low start-up voltage. (For 48Q/CQ units,
1
To be limited to 50 mA by the external circuitry.
no pull-up resistor is required.)
BCD20023 Rev AB, 02-Nov-2010
Page 14 of 31
www.power-one.com
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
LT5400AIMS8E-3#PBF
RES ARRAY MULT OHM 4 RES 8-MSOP
LTA201-TR-B/125N
SWITCH ROCKER SPST 15A 125V
LTA211-TR-W/125N
SWITCH ROCKER SPST 15A 125V
LUS001ST
SWITCH PUSH SPST-NO 0.25A 28V
LW3021A
SWITCH ROCKER DPST 20A 110V
LW3123-N4EE-H
SWITCH ROCKER DPDT 10A 125V
LXES1TBAA2-013
CERAMIC ESD DEV .55PF 6V SMD
LXES1TBAA4-005
CERAMIC ESD DEV 1.3PF 6V SMD
相关代理商/技术参数
LT1702-7
功能描述:AC-DC BATTERY CHARGER 48V 11A RoHS:否 类别:电源 - 外部/内部（非板载） >> AC DC 转换器 系列:* 产品培训模块:MP Modular-Configurable AC-DC Power Supply 特色产品:Configurable Power Supplies 标准包装:1 系列:MP
LT170A
制造商:未知厂家 制造商全称:未知厂家 功能描述:Linear Hall-Effect Sensor
LT170E2
制造商:未知厂家 制造商全称:未知厂家 功能描述:LT170E2 |Data Sheet
LT170Z
制造商:SEOUL 制造商全称:Seoul Semiconductor 功能描述:GREEN OVAL LAMP LED
LT171
制造商:SEOUL 制造商全称:Seoul Semiconductor 功能描述:RED LAMP LED
LT1711
制造商:未知厂家 制造商全称:未知厂家 功能描述:UNDERSTANDING THE SUBJECT IS CUSTOMER SERVICE
LT1711CMS8
功能描述:IC COMP R-RINOUT SINGLE 8-MSOP RoHS:否 类别:集成电路 (IC) >> 线性 - 比较器 系列:UltraFast™ 产品培训模块:Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:通用 元件数:1 输出类型:CMOS，推挽式，满摆幅，TTL 电压 - 电源，单路/双路(±):2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V 电压 - 输入偏移（最小值）:5mV @ 5.5V 电流 - 输入偏压（最小值）:1pA @ 5.5V 电流 - 输出（标准）:- 电流 - 静态（最大值）:24µA CMRR, PSRR（标准）:80dB CMRR，80dB PSRR 传输延迟（最大）:450ns 磁滞:±3mV 工作温度:-40°C ~ 85°C 封装/外壳:6-WFBGA，CSPBGA 安装类型:表面贴装 包装:管件 其它名称:Q3554586
LT1711CMS8#PBF
功能描述:IC COMP R-RINOUT SINGLE 8-MSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 比较器 系列:UltraFast™ 标准包装:1 系列:- 类型:通用 元件数:1 输出类型:CMOS，开路集电极，TTL 电压 - 电源，单路/双路(±):2.7 V ~ 5.5 V 电压 - 输入偏移（最小值）:7mV @ 5V 电流 - 输入偏压（最小值）:0.25µA @ 5V 电流 - 输出（标准）:84mA @ 5V 电流 - 静态（最大值）:120µA CMRR, PSRR（标准）:- 传输延迟（最大）:600ns 磁滞:- 工作温度:-40°C ~ 85°C 封装/外壳:SC-74A，SOT-753 安装类型:表面贴装 包装:剪切带 (CT) 产品目录页面:1268 (CN2011-ZH PDF) 其它名称:*LMV331M5*LMV331M5/NOPBLMV331M5CT