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參數(shù)資料
| 型號： | DS1620S |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Switch/Digital Output Temperature Sensor |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), 0.50Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | 0.208 INCH, SO-8 |
| 文件頁數(shù)： | 3/9頁 |
| 文件大?。?/td> | 167K |
| 代理商： | DS1620S |
MAX667
+5V/Programmable Low-Dropout
Voltage Regulator
_______________________________________________________________________________________
3
1000
1
10
100
1000
DROPOUT VOLTAGE
vs. LOAD CURRENT
10
100
MAX667-Fg
TOC
1
LOAD CURRENT (mA)
DROPOUT
VOLTAGE
(mV)
QUIESCENT CURRENT
vs. LOAD CURRENT
QUIESCENT
CURRENT
(μ
A)
10
100
1000
10,000
100,000
0.01
0.1
1
10
100
1000
MAX667-Fg
TOC
2
LOAD CURRENT (mA)
VIN = +6V
1000
1
0
50
150
250
10
100
MAX667-Fg
TOC
3
100
200
DD OUTPUT CURRENT
vs. INPUT-OUTPUT DIFFERENCE
DD
OUTPUT
CURRENT
(μ
A)
INPUT-OUTPUT DIFFERENCE (mV)
5 10
1
20 50 100mA LOAD
2
__________________________________________Typical Operating Characteristics
_____________________Pin Description
_______________Detailed Description
Figure 1 shows a micropower bandgap reference, an
error amplifier, a PNP pass transistor, and two com-
parators as the main elements of the MAX667. One
comparator, C1, selects the fixed 5V or adjustable
operation with an external voltage divider. The other
comparator, C2, is a low-battery detector.
The bandgap reference, which is trimmed to 1.22V,
connects internally to one input of the error amplifier,
A1. The feedback signal from the regulator output sup-
plies the other input of A1 from either an on-chip volt-
age divider or two external resistors. When SET is
grounded, the internal divider provides the error ampli-
fier feedback signal for a fixed 5V output. When SET is
more than 50mV above ground, the error amplifier’s
input switches directly to SET while an external resistor
divider from OUT determines the output voltage.
A second comparator, C2, compares the LBI input to
the internal reference voltage. LBO is an open-drain
FET connected to GND. The low-battery threshold can
also be set with a voltage divider at LBI. In addition, the
MAX667 has a shutdown input (SHDN) that disables
the load and the device while reducing quiescent cur-
rent when it is pulled high.
+5V Output
Figure 2 shows the connection for a fixed 5V output.
The SET input is grounded, and no external resistors
are required. Figure 3 shows adjustable output opera-
tion. R1 and R2 set the output voltage. SHDN should be
grounded if not used.
(Output) Voltage Set, CMOS Input.
Connect to GND for 5V output. For
other voltages, connect external resis-
tive divider from OUT.
SET
6
Low-Battery Output. An open-drain N-
channel transistor that sinks current to
GND when LBI is less than 1.22V.
LBO
7
Positive Input Voltage (unregulated)
IN
8
Regulated Output Voltage. OUT falls
to 0V when SHDN is above 1.5V. SET
determines output voltage when SET
is above 50mV; otherwise, it is 5V.
OUT must be connected to an output
filter capacitor.
OUT
2
Low-Battery Detector. A CMOS input
to an internal 1.255V comparator
whose output is the LBO pin.
LBI
3
Ground
GND
4
Shutdown Input. Connect to GND for
normal operation (output active). Pull
above 1.5V to disable OUT, LBO, and
DD and to reduce quiescent current to
less than 1A.
SHDN
5
PIN
Dropout Detector Output—the collec-
tor of a PNP pass transistor. Normally
an open circuit, it sources current as
dropout is reached.
DD
1
FUNCTION
NAME
(TA = +25°C, unless otherwise noted.)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1620S/T&R | 制造商:Maxim Integrated Products 功能描述:DIGITAL THERM. 8P SO 208M TRL - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER/STAT DIG 8-SOIC |
| DS1620S/T&R | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| DS1620S+ | 功能描述:板上安裝溫度傳感器 Digital Thermometer & Thermostat RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| DS1620S+T&R | 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 3-WIRE 8SOIC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER/STAT DIG 8-SOIC 制造商:Maxim Integrated Products 功能描述:Board Mount Temperature Sensors Digital Thermometer & Thermostat |
| DS1620S+T&R/C01 | 制造商:Maxim Integrated Products 功能描述:DIGITAL THERMOMETER AND THERMOSTAT - Tape and Reel |
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