參數(shù)資料
型號： LTC1702I
廠商： Linear Technology Corporation
元件分類： 通用總線功能
英文描述： Synchronous 8-Bit Up/Down Binary Counters 24-SOIC 0 to 70
中文描述： 雙550kHz的同步二相開關穩(wěn)壓器控制器
文件頁數(shù)： 1/36頁
文件大?。?/td> 350K
代理商： LTC1702I
1
LTC1702
Dual 550kHz Synchronous
2-Phase Switching Regulator Controller
The LTC
1702 is a dual switching regulator controller opti-
mized for high efficiency with low input voltages. It includes
two complete, on-chip, independent switching regulator
controllers each designed to drive a pair of external N-channel
MOSFET devices in a voltage mode feedback, synchronous
buck configuration. The LTC1702 uses a constant-frequency,
true PWM design switching at 550kHz, minimizing external
component size and cost and maximizing load transient
performance. The synchronous buck architecture automati-
cally shifts to discontinuous and then to Burst Mode
TM
operation as the output load decreases, ensuring maximum
efficiency over a wide range of load currents.
The LTC1702 features an onboard reference trimmed to
0.5% and can provide better than 1% regulation at the
converter outputs. Open-drain logic outputs indicate whether
either output has risen to within 5% of the final output voltage
and an optional latching FAULT mode protects the load if the
output rises 15% above the intended voltage. Each channel
can be enabled independently; with both channels disabled,
the LTC1702 shuts down and supply current drops below
100
μ
A.
I
Two Independent Controllers in One Package
I
Two Sides Run Out-of-Phase to Minimize C
IN
I
All N-Channel External MOSFET Architecture
I
No External Current Sense Resistors
I
Excellent Output Regulation: 1% Total Output
Accuracy
I
550kHz Switching Frequency Minimizes External
Component Size
I
1A to 25A Output Current per Channel
I
High Efficiency over Wide Load Current Range
I
Quiescent Current Drops Below 100
μ
A in Shutdown
I
Small 24-Pin Narrow SSOP Package
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a trademark of Linear Technology Corporation.
I
Microprocessor Core and I/O Supplies
I
Multiple Logic Supply Generator
I
Distributed Power Applications
I
High Efficiency Power Conversion
Dual Output High Power 3.3V/2.5V Logic Supply
DESCRIPTIOU
FEATURES
APPLICATIU
TYPICAL APPLICATIO
U
LTC1702
PV
CC
BOOST1
BG1
TG1
SW1
I
MAX1
PGOOD1
FCB
RUN/SS
COMP1
SGND
FB1
I
MAX2
BOOST2
BG2
TG2
SW2
PGND
PGOOD2
FAULT
RUN/SS2
COMP2
FB2
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
1
μ
F
10
1
μ
F
1
μ
F
27k
27k
1.6k
68k
1702 TA01
V
IN
1.2k
10k
1%
C
OUT1
180
μ
F
×
4
820pF
27pF
680pF
47k
1
μ
F
V
OUT1
AT 15A
1
μ
F
4.75k
1%
Q2
Q1
Q4
Q3
D3
D2
C
OUT1
, C
: PANASONIC EEFUE0G181R
C
: KEMET TS10X337M010AS
D1, D2: MOTOROLA MBR0520LT1
D3, D4: MOTOROLA MBRS320T3
L1, L2: SUMIDA CEP125-1R0
Q1 TO Q8: FAIRCHILD FDS6670A
D1
PWRGD1
L1
1
μ
H
+
10
μ
F
10
μ
F
1
μ
F
V
IN
= 5V
±
10%
1
μ
F
C
IN
330
μ
F
×
3
+
Q7
Q5
Q8
Q6
D4
680pF
27pF
3300pF
15.8k
1%
4.99k
1%
10k
L2
1
μ
H
C
OUT2
180
μ
F
×
4
1
μ
F
V
3.3V/15A
PWRGD2
FAULT
+
V
IN
10k
相關PDF資料
PDF描述
LTC1702IGN Dual 550kHz Synchronous 2-Phase Switching Regulator Controller
LTC1706-85 VID Voltage Programmer for Intel VRM 8.5
LTC1706EMS-85 VID Voltage Programmer for Intel VRM 8.5
LTC1706CS8-19 VID Voltage Programmer
LTC1706C-19 Circular Connector; Body Material:Aluminum; Series:PT06; No. of Contacts:18; Connector Shell Size:14; Connecting Termination:Crimp; Circular Shell Style:Straight Plug; Circular Contact Gender:Pin; Insert Arrangement:14-18
相關代理商/技術參數(shù)
參數(shù)描述
LTC1702IGN 功能描述:IC REG CTRLR BUCK PWM VM 24-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:PolyPhase® 標準包裝: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 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:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LTC1702IGN#PBF 功能描述:IC REG CTRLR BUCK PWM VM 24-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:PolyPhase® 標準包裝: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 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:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LTC1702IGN#TR 功能描述:IC REG CTRLR BUCK PWM VM 24-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:PolyPhase® 標準包裝: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 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:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LTC1702IGN#TRPBF 功能描述:IC REG CTRLR BUCK PWM VM 24-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:PolyPhase® 標準包裝: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 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:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LTC1703CG 功能描述:IC REG SW DUAL SYNC VID 28SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標準包裝:43 系列:- 應用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應商設備封裝:48-QFN（7x7） 包裝:管件
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*