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參數(shù)資料
| 型號(hào)： | LTC3830ES |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 16-Bit Bus Transceiver With 3-State Outputs 54-BGA MICROSTAR JUNIOR -40 to 85 |
| 中文描述： | SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 0.150 INCH, PLASTIC, SO-16 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大?。?/td> | 305K |
| 代理商： | LTC3830ES |
7
LTC3830/LTC3830-1
sn3830 3830fs
PIU
FREQSET (Pin 11/NA/NA):
Frequency Set. Use this pin to
adjust the free-running frequency of the internal oscillator.
With the pin floating, the oscillator runs at about 200kHz.
A resistor from FREQSET to ground speeds up the oscil-
lator; a resistor to V
CC
slows it down.
I
MAX
(Pin 12/NA/NA):
Current Limit Threshold Set. I
MAX
sets the threshold for the internal current limit compara-
tor. If I
FB
drops below I
MAX
with G1 on, the LTC3830 goes
into current limit. I
MAX
has an internal 12
μ
A pull-down to
GND. Connect this pin to the main V
IN
supply at the drain
of Q1, through an external resistor to set the current limit
threshold. Connect a 0.1
μ
F decoupling capacitor across
this resistor to filter switching noise.
I
FB
(Pin 13/NA/NA):
Current Limit Sense. Connect this pin
to the switching node at the source of Q1 and the drain of
Q2 through a 1k resistor. The 1k resistor is required to
prevent voltage transients from damaging I
FB
.This pin is
used for sensing the voltage drop across the upper
N-channel MOSFET, Q1.
V
CC
(Pin 14/Pin 7/Pin 7):
Power Supply Input. All low
power internal circuits draw their supply from this pin.
Connect this pin to a clean power supply, separate from
the main V
IN
supply at the drain of Q1. This pin requires a
4.7
μ
F bypass capacitor. The LTC3830-1 and the 8-lead
LTC3830 have V
CC
and PV
CC2
tied together at Pin 7 and
require a 10
μ
F bypass capacitor to GND.
PV
CC2
(Pin 15/Pin 7/Pin 7):
Power Supply Input for G2.
Connect this pin to the main high power supply.
G2 (Pin 16/Pin 8/Pin 8):
Bottom Gate Driver Output.
Connect this pin to the gate of the lower N-channel
MOSFET, Q2. This output swings from PGND to PV
CC2
. It
remains low when G1 is high or during shutdown mode.
To prevent output undershoot during a soft-start cycle, G2
is held low until G1 first goes high. (FFBG in Block
Diagram.)
BLOCK DIAGRA
–
+
–
+
–
+
R
S
PV
CC1
G1
PV
CC2
G2
PGND
FB
SENSE
+
V
REF
V
REF
– 3%
V
REF
+ 3%
18k
11.2k
SENSE
–
3830 BD
BG
Q
Q
R
POR
FFBG
S
ENABLE
G2
Q
–
+
PWM
QSS
V
REF
V
REF
– 3%
V
REF
+ 3%
MAX
MIN
ERR
12
μ
A
INTERNAL
OSCILLATOR
100
μ
s DELAY
SHDN
FREQSET
COMP
SS
POWER DOWN
DISABLE GATE DRIVE
LOGIC AND
THERMAL SHUTDOWN
+
–
CC
12
μ
A
I
MAX
I
FB
V
CC
GND
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| LTC3830ES#TR | 功能描述:IC REG CTRLR BUCK PWM VM 16-SOIC RoHS:否 類別: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:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR) |
| LTC3830ES#TRPBF | 功能描述:IC REG CTRLR BUCK PWM VM 16-SOIC RoHS:是 類別: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:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR) |
| LTC3830ES8 | 功能描述:IC REG CTRLR BUCK PWM VM 8-SOIC RoHS:否 類別: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 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR |
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