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參數(shù)資料
| 型號： | LTC3900MPS8#TR |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO8 |
| 封裝： | PLASTIC, SOP-8 |
| 文件頁數(shù)： | 17/20頁 |
| 文件大?。?/td> | 277K |
| 代理商： | LTC3900MPS8#TR |
LTC3900
6
3900fb
block DiagraM
pin FuncTions
CS+, CS– (Pin 1, 2): Current Sense Differential Input.
Connect CS+ through a series resistor to the drain of the
external catch MOSFET, Q4. Connect CS– to the source.
The LTC3900 monitors the CS inputs 250ns after CG goes
high. If the inductor current reverses and flows into the
MOSFET causing CS+ to rise above CS– by more than
10.5mV, the LTC3900 pulls CG low. See the Current Sense
section for more details on choosing the resistance value
for RCS1 to RCS3.
CG (Pin 3): Catch MOSFET Gate Driver. This pin drives the
gate of the external N-channel catch MOSFET, Q4.
VCC (Pin 4): Main Supply Input. This pin powers the driv-
ers and the rest of the internal circuitry. Bypass this pin
to GND using a 4.7F ceramic capacitor in close proximity
to the LTC3900.
FG (Pin 5): Forward MOSFET Gate Driver. This pin drives
the gate of the external N-channel forward MOSFET, Q3.
GND (Pin 6): The VCC bypass capacitor should be con-
nected directly to this GND pin.
TIMER (Pin 7): Timer Input. Connect this pin to an external
R-C network to program the timeout period. The LTC3900
resets the timer at every negative transition of the SYNC
input. If the SYNC signal is missing or incorrect, the
LTC3900 pulls both CG and FG low once the TIMER pin
goes above the timeout threshold. See the Timer section
for more details on programming the timeout period.
SYNC (Pin 8): Driver Synchronization Input. This input
is signal edge sensitive. A negative voltage slew at SYNC
forces FG to pull high and CG to pull low. A positive volt-
age slew at SYNC forces FG to pull low and CG to pull
high. The SYNC input can accept both pulse or square
wave signals.
SYNC
AND
DRIVER
LOGIC
IS
S–
S+
SYNC+
SYNC–
TMR
–1.4V
+1.4V
DISABLE
DRIVER
UVLO
ZTMR
0.5 VCC
ZCS
11V
7
2
1
8
5
4
SYNC
CS+
CS–
TIMER
MTMR
R1
180k
R2
45k
TIMER
RESET
FG
GND
CG
VCC
3
6
3900 BD
+
–
10.5mV
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| LTC3900MPS8#PBF | SWITCHING REGULATOR, PDSO8 |
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| LTC3900HS8#TRPBF | SWITCHING REGULATOR, PDSO8 |
| LTC3900HS8#TR | SWITCHING REGULATOR, PDSO8 |
| LTC3900MPS8#TRPBF | SWITCHING REGULATOR, PDSO8 |
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| LTC3901EGN#PBF | 功能描述:IC DRIVER RECT SYNC CONV 16SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動(dòng)器 - 外部開關(guān) 系列:- 標(biāo)準(zhǔn)包裝:5 系列:- 配置:低端 輸入類型:非反相 延遲時(shí)間:600ns 電流 - 峰:12A 配置數(shù):1 輸出數(shù):1 高端電壓 - 最大（自引導(dǎo)啟動(dòng)）:- 電源電壓:14.2 V ~ 15.8 V 工作溫度:-20°C ~ 60°C 安裝類型:通孔 封裝/外殼:21-SIP 模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 配用:BG2A-NF-ND - KIT DEV BOARD FOR IGBT 其它名稱:835-1063 |
| LTC3901EGN#TR | 功能描述:IC DRIVER RECT SYNC CONV 16SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動(dòng)器 - 外部開關(guān) 系列:- 標(biāo)準(zhǔn)包裝:5 系列:- 配置:低端 輸入類型:非反相 延遲時(shí)間:600ns 電流 - 峰:12A 配置數(shù):1 輸出數(shù):1 高端電壓 - 最大（自引導(dǎo)啟動(dòng)）:- 電源電壓:14.2 V ~ 15.8 V 工作溫度:-20°C ~ 60°C 安裝類型:通孔 封裝/外殼:21-SIP 模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 配用:BG2A-NF-ND - KIT DEV BOARD FOR IGBT 其它名稱:835-1063 |
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