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參數(shù)資料
| 型號(hào)： | LTC1625IS |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 2 A SWITCHING CONTROLLER, 150 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | PLASTIC, SO-16 |
| 文件頁(yè)數(shù)： | 6/24頁(yè) |
| 文件大小： | 454K |
| 代理商： | LTC1625IS |
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6
LTC1625
PI
FU
CTIO
N
S
U
U
EXTV
CC
(Pin 1):
INTV
CC
Switch Input. When the EXTV
CC
voltage is above 4.7V, the switch closes and supplies
INTV
CC
power from EXTV
CC
. Do not exceed 7V at this pin.
SYNC (Pin 2):
Synchronization Input for Internal Oscilla-
tor. The oscillator will nominally run at 150kHz when open,
225kHz when tied above 1.2V, and will lock over a 1.5:1
clock frequency range.
RUN/SS (Pin 3):
Run Control and Soft Start Input. A
capacitor to ground at this pin sets the ramp time to full
current output (approximately 1s/
μ
F). Forcing this pin
below 1.4V shuts down the device.
FCB (Pin 4):
Forced Continuous Input. Tie this pin to
ground to force synchronous operation at low load, to a
resistive divider from the secondary output when using
a secondary winding, or to INTV
CC
to enable Burst Mode
operation at low load.
I
TH
(Pin 5):
Error Amplifier Compensation Point. The
current comparator threshold increases with this control
voltage. Nominal voltage range for this pin is 0V to 2.4V.
SGND (Pin 6):
Signal Ground. Connect to the (–) terminal
of C
OUT
.
V
OSENSE
(Pin 7):
Output Voltage Sense. Feedback input
from the remotely sensed output voltage or from an
external resistive divider across the output.
V
PROG
(Pin 8):
Output Voltage Programming. When
V
OSENSE
is connected to the output, V
PROG
< 0.8V selects
a 3.3V output and V
PROG
> 3.5V selects a 5V output.
Leaving V
PROG
open allows the output voltage to be set by
an external resistive divider between the output and
V
OSENSE
.
PGND (Pin 9):
Driver Power Ground. Connects to the
source of the bottom N-channel MOSFET, the (–) terminal
of C
VCC
and the (–) terminal of C
IN
.
BG (Pin 10):
Bottom Gate Drive. Drives the gate of the
bottom N-channel MOSFET between ground and INTV
CC
.
INTV
CC
(Pin 11):
Internal 5.2V Regulator Output. The
driver and control circuits are powered from this voltage.
Decouple this pin to power ground with a minimum of
4.7
μ
F tantalum capacitance.
BOOST (Pin 12):
Topside Floating Driver Supply. The (+)
terminal of the bootstrap capacitor connects here. This pin
swings from a diode drop below INTV
CC
to V
IN
+ INTV
CC
.
TG (Pin 13):
Top Gate Drive. Drives the top N-channel
MOSFET with a voltage swing equal to INTV
CC
minus a
diode drop, superimposed on the switch node voltage.
SW (Pin 14):
Switch Node. The (–) terminal of the boot-
strap capacitor connects here. This pin swings from a
diode drop below ground up to V
IN
.
TK (Pin 15):
Top MOSFET Kelvin Sense. MOSFET V
DS
sensing requires this pin to be routed to the drain of the top
MOSFET separately from V
IN
.
V
IN
(Pin 16):
Main Supply Input. Decouple this pin to
ground with an RC filter (4.7
, 0.1
μ
F) for applications
above 3A.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1625IS#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 16-SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤(pán) 包裝:Digi-Reel® 產(chǎn)品目錄頁(yè)面:1303 (CN2011-ZH PDF) 其它名稱(chēng):LM3754SQDKR |
| LTC1625IS#PBF | 制造商:Linear Technology 功能描述:IC SYNC STEP-DOWN REGULATOR 16-SOIC |
| LTC1625IS#TR | 功能描述:IC REG CTRLR BUCK PWM CM 16-SOIC RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤(pán) 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱(chēng):LM1771SSDX |
| LTC1625IS#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 16-SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤(pán) 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱(chēng):LM1771SSDX |
| LTC1625ISPBF | 制造商:Linear Technology 功能描述:No RSENSE Current Mode Regulator SOIC16 |
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