- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385505 > LTC1705 (Linear Technology Corporation) Dual 550kHz Synchronous Switching Regulator Controller with 5-Bit VID and 150mA LDO PDF資料下載
參數(shù)資料
| 型號： | LTC1705 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Dual 550kHz Synchronous Switching Regulator Controller with 5-Bit VID and 150mA LDO |
| 中文描述： | 雙550kHz的同步開關(guān)，5位VID和150mA LDO穩(wěn)壓器控制器 |
| 文件頁數(shù)： | 7/28頁 |
| 文件大小： | 326K |
| 代理商： | LTC1705 |
第1頁第2頁第3頁第4頁第5頁第6頁當(dāng)前第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
LTC1705
7
I
MAXIO
(Pin 1):
I/O Supply Current Limit Set. The I
MAXIO
pin
sets the current limit comparator threshold for the I/O
controller. If the voltage drop across the bottom MOSFET,
QBIO, exceeds the magnitude of the voltage at I
MAXIO
, the
I/O controller enters current limit. The I
MAXIO
pin has an
internal 10
μ
A current source pull-up, allowing the current
threshold to be set with a single external resistor to PGND.
Kelvin connect this current setting resistor to the source of
QBIO. Refer to the Current Limit Programming section for
more information on choosing the value of R
IMAX
.
PV
CC
(Pin 2):
Driver Power Supply Input. PV
CC
provides
power to the BGC and BGIO output drivers. PV
CC
must be
connected to a voltage high enough to fully turn on the
external MOSFETs QBC and QBIO. PV
CC
should generally
be connected directly to V
IN
, the main system 5V supply.
PV
CC
requires at least a 10
μ
F bypass capacitor directly to
PGND.
BOOSTC (Pin 3):
Core Controller Top Gate Driver Supply.
The BOOSTC pin supplies power to the floating TGC driver.
Bypass BOOSTC to SWC with a 1
μ
F capacitor. An external
schottky diode from V
IN
to BOOSTC creates a complete
floating charge-pumped supply at BOOSTC. No other
external supplies are required.
PIU
BGC (Pin 4):
Core Supply Bottom Gate Drive. The BGC pin
drives the gate of the bottom N-channel synchronous
switch MOSFET, QBC. BGC is designed to typically drive
up to 10,000pF of gate capacitance. If RUN/SS goes low,
BGC goes low, turning off QBC.
TGC (Pin 5):
Core Supply Top Gate Drive. The TGC pin
drives the gate of the top N-channel MOSFET, QTC. The
TGC driver draws power from the BOOSTC pin and returns
it to the SWC pin, providing true floating drive to QTC. TGC
is designed to typically drive up to 10,000pF of gate
capacitance. If RUN/SS goes low, TGC goes low, turning
off QTC.
SWC (Pin 6):
Core Supply Switching Node. Connect SWC
to the switching node of the core converter. The TGC driver
ground returns to SWC, providing floating gate drive to the
top N-channel MOSFET switch, QTC. The voltage at SWC
is compared to I
MAXC
by the current limit comparator while
the bottom MOSFET, QBC, is on.
PGND (Pin 7):
Power Ground. The BGC and BGIO drivers
return to this pin. Connect PGND to a high-current ground
node in close proximity to the sources of external MOSFETs
QBC and QBIO, and the V
IN
and V
OUT
bypass capacitors.
I
MAXC
(Pin 8):
Core Supply Current Limit Set. See I
MAXIO
.
TG, BG LOAD (pF)
0
2000
4000
6000
8000
10000
I
P
,
B
1705 G26
12
10
8
6
4
2
0
C
P
,
B
36
30
24
18
12
6
0
T
A
= 25
°
C, PVCC = BOOST = 5V
CORE
DRIVERS
SUPPLY
CURRENT
WITH I/O
DISABLED
I/O DRIVERS
SUPPLY CURRENT
WITH CORE DISABLED
TG, BG LOAD (pF)
0
2000
4000
6000
8000
10000
t
r
,
f
1705 G27
60
50
40
30
20
10
0
T
A
= 25
°
C, PVCC = BOOST = 5V
CORE
DRIVERS
I/O DRIVERS
TEMPERATURE (
°
C)
–50
–25
0
25
50
75
100
125
V
S
1705 G28
0.80
0.68
0.56
0.44
0.32
0.20
V
= 5V
MEASURED AT RUN/SS
I
PVCC
, I
BOOST
vs Driver Load
Drivers Rise and Fall Time vs
Load
V
SHDN
vs Temperature
TYPICAL PERFOR AU
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1705EGN | Dual 550kHz Synchronous Switching Regulator Controller with 5-Bit VID and 150mA LDO |
| LTC1710 | Synchronous 8-Bit Up/Down Binary Counters 24-PDIP 0 to 70 |
| LTC1710C | Synchronous 8-Bit Up/Down Binary Counters 24-PDIP 0 to 70 |
| LTC1710CMS8 | Dual 16-By-4 Register Files 24-SOIC 0 to 70 |
| LTC1710CS8 | SMBus Dual Monolithic High Side Switch |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1705EGN | 功能描述:IC PWR SUPPLY CONTROLLER 28SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| LTC1705EGN#PBF | 功能描述:IC PWR SUPPLY CONTROLLER 28SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| LTC1705EGN#TR | 功能描述:IC PWR SUPPLY CONTROLLER 28SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| LTC1705EGN#TRPBF | 功能描述:IC PWR SUPPLY CONTROLLER 28SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| LTC1706CS8-19 | 功能描述:IC VID VOLTAGE PROGRAMMER 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。