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參數(shù)資料
| 型號(hào)： | LT1912EMSE#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 4.2 A SWITCHING REGULATOR, 240 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | LEAD FREE, PLASTIC, MSOP-10 |
| 文件頁數(shù)： | 22/24頁 |
| 文件大?。?/td> | 365K |
| 代理商： | LT1912EMSE#PBF |
LT1912
7
1912fa
BD (Pin 1): This pin connects to the anode of the boost
Schottky diode. BD also supplies current to the internal
regulator.
BOOST (Pin 2): This pin is used to provide a drive
voltage,higherthantheinputvoltage,totheinternalbipolar
NPN power switch.
SW (Pin 3): The SW pin is the output of the internal power
switch. Connect this pin to the inductor, catch diode and
boost capacitor.
VIN (Pin 4): The VIN pin supplies current to the LT1912’s
internal regulator and to the internal power switch. This
pin must be locally bypassed.
RUN/SS (Pin 5): The RUN/SS pin is used to put the
LT1912 in shutdown mode. Tie to ground to shut down
the LT1912. Tie to 2.5V or more for normal operation. If
the shutdown feature is not used, tie this pin to the VIN
pin. RUN/SS also provides a soft-start function; see the
Applications Information section.
SYNC (Pin 6): This is the external clock synchronization
input. Ground this pin when SYNC function is not used. Tie
to a clock source for synchronization. Clock edges should
have rise and fall times faster than 1s. See synchronizing
section in Applications Information.
N/C (Pin 7): This pin should be tied to ground.
FB (Pin 8): The LT1912 regulates the FB pin to 0.790V.
Connect the feedback resistor divider tap to this pin.
VC (Pin 9): The VC pin is the output of the internal error
amplifier. The voltage on this pin controls the peak switch
current. Tie an RC network from this pin to ground to
compensate the control loop.
RT (Pin 10): Oscillator Resistor Input. Connecting a resis-
tor to ground from this pin sets the switching frequency.
GND (Exposed Pad Pin 11): Ground. The exposed pad
must be soldered to PCB.
+
–
+
–
OSCILLATOR
200kHz–500kHz
VC CLAMP
SOFT-START
SLOPE COMP
R
VIN
RUN/SS
BOOST
SW
SWITCH
LATCH
VC
VOUT
C2
C3
CF
L1
D1
CC
RC
BD
RT
R2
GND
ERROR AMP
R1
FB
RT
C1
S
Q
∑
1912 BD
4
5
10
1
2
3
9
11
8
6
INTERNAL 0.79V REF
SYNC
PIN FUNCTIONS
BLOCK DIAGRAM
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1912EMSE-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:36V, 2A, 500kHz Step-Down Switching Regulator |
| LT1913 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:25V, 3.5A, 2.4MHz Step-Down Switching Regulator |
| LT1913EDD#PBF | 功能描述:IC REG BUCK ADJ 3.5A 10DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關(guān):2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LT1913EDD#TRPBF | 功能描述:IC REG BUCK ADJ 3.5A 10DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 設(shè)計(jì)資源:Design Support Tool 標(biāo)準(zhǔn)包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:100mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細(xì)型，TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| LT1913EDD-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:25V, 3.5A, 2.4MHz Step-Down Switching Regulator |
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