- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄5881 > LT1621IGN#TR (Linear Technology)IC AMP CURR SENSE RR DUAL 16SSOP PDF資料下載
參數(shù)資料
| 型號(hào)： | LT1621IGN#TR |
| 廠商： | Linear Technology |
| 文件頁(yè)數(shù)： | 7/12頁(yè) |
| 文件大小： | 0K |
| 描述： | IC AMP CURR SENSE RR DUAL 16SSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 放大器類型： | 電流檢測(cè) |
| 電路數(shù)： | 2 |
| 輸出類型： | 滿擺幅 |
| 電流 - 輸入偏壓： | 20nA |
| 電壓 - 輸入偏移： | 6000µV |
| 電流 - 電源： | 2.3mA |
| 電壓 - 電源，單路/雙路(±)： | 4.5 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SSOP |
| 包裝： | 帶卷 (TR) |
4
LT1620/LT1621
PI FU CTIO S
U
UU
input (across external sense resistor) equal to (VCC –
VPROG)/10. Input voltage range is VCC to (VCC – 1.25V).
AVG2: Sense Amplifier AV = – 20 Output and Comparator
Positive Input. Used as integration node for end-of-cycle
determination flag. Integration time constant is calculated
using 5k
typical output impedance.
PROG2: Comparator Negative Input. Program node for
end-of-cycle determination typically used during voltage
mode operation. The comparator threshold is reached
when the current sense amplifier differential input voltage
equals (VCC – VPROG2)/20. Input voltage range is (VCC –
0.15V) to (VCC – 2.5V).
GND: Ground Reference.
MODE: Comparator Open Collector Output. Output is logic
low when magnitude of current sense amplifier differential
input voltage is less than (VCC – VPROG2)/20.
IOUT: Transconductance Amplifier Output. In typical appli-
cation, IOUT sinks current from current-setting node on
companion PWM controller IC, facilitating current mode
loop control.
FUNCTIONAL BLOCK DIAGRA
UU
W
–
+
SENSE
AMPLIFIER
VCC
IN+
IN–
PROG
PROG2*
500
2.5k
–
+
SENSE
AVG
AVG2*
IOUT
MODE*
LT1620/21 FBD
gm
–
+
5k
*AVAILABLE IN THE LT1620GN ONLY
+
–
+
–
SENSE
–
SENSE
+
INTVCC
ITH
PWM
CONTROLLER
END-OF-CYCLE
(ACTIVE LOW)
(
×1 GAIN)
(
×10 GAIN)
(
×20 GAIN)
CURRENT
SENSE
RESISTOR
VID
GND
5V
OPERATION
U
Current Sense Amplifier
The current sense amplifier is a multiple output voltage
amplifier with an operational input common mode range
from 0V to 32V. The amplifier generates scaled output
voltages at the SENSE, AVG and AVG2 (available in
LT1620GN) pins. These output signal voltages are refer-
enced to the VCC supply by pulling signal current through
internal VCC referred resistors.
(Refer to the Functional Block Diagram)
The first output (SENSE) is a unity gain, level-shifted repre-
sentation of the input signal (IN+ – IN–). In typical PWM/
charger type applications, this output is used to drive the
current sense amplifier of the mated PWM controller IC.
The other two outputs (AVG and AVG2) are internally
connected to a transconductance amplifier and compara-
tor, respectively. The AVG output yields a gain of 10, and
the AVG2 output provides a gain of 20. These pins are
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 77313-424-20LF | BERGSTIK |
| TSM-103-01-S-SV-TR | CONN HEADER 3POS .100" SNGL SMD |
| 86453-308 | MINITEK II R/A HDR |
| RC0805FR-072R43L | RES 2.43 OHM 1/8W 1% 0805 SMD |
| 67997-218HLF | CONN HEADER 18POS STR .100 15AU |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1624IS8 | 制造商:Linear Technology 功能描述: |
| LT-1625S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:T1/CEPT/ISDN-PRI TRANSFORMER |
| LT1627 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower Low Dropout Regulators with Shutdown |
| LT1629 | 制造商:EDSYN 功能描述: |
| LT1630 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:30MHz, 10V/us, Dual/Quad Rail-to-Rail Input and Output Precision Op Amps |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。