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参数资料
| 型号： | LTC3890EGN-1#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO28 |
| 封装： | LEAD FREE, PLASTIC, SSOP-28 |
| 文件页数： | 30/36页 |
| 文件大小： | 498K |
| 代理商： | LTC3890EGN-1#PBF |
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LTC3890-1
36
38901f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
LINEAR TECHNOLOGY CORPORATION 2010
LT 0210 PRINTED IN USA
TYPICAL APPLICATION
RELATED PARTS
High Efciency Dual 12V/3.3V Step-Down Converter
PART NUMBER
DESCRIPTION
COMMENTS
LTC3857/LTC3857-1 Low IQ, Dual Output 2-Phase Synchronous Step-Down
DC/DC Controllers with 99% Duty Cycle
Phase-Lockable Fixed Frequency 50kHz to 900kHz, 4V ≤ VIN ≤ 38V,
0.8V ≤ VOUT ≤ 24V, IQ = 50μA
LTC3858/LTC3858-1 Low IQ, Dual Output 2-Phase Synchronous Step-Down
DC/DC Controllers with 99% Duty Cycle
Phase-Lockable Fixed Frequency 50kHz to 900kHz, 4V ≤ VIN ≤ 38V,
0.8V ≤ VOUT ≤ 24V, IQ = 170μA
LTC3868/LTC3868-1 Low IQ, Dual Output 2-Phase Synchronous Step-Down
DC/DC Controller with 99% Duty Cycle
Phase-Lockable Fixed Frequency 50kHz to 900kHz, 4V ≤ VIN ≤ 24V,
0.8V ≤ VOUT ≤ 14V, IQ = 170μA
LTC3834/LTC3834-1 Low IQ, Synchronous Step-Down DC/DC Controller with
99% Duty Cycle
Phase-Lockable Fixed Frequency 140kHz to 650kHz, 4V ≤ VIN ≤ 36V,
0.8V ≤ VOUT ≤ 10V, IQ = 30μA
LTC3835/LTC3835-1 Low IQ, Synchronous Step-Down DC/DC Controller with
99% Duty Cycle
Phase-Lockable Fixed Frequency 140kHz to 650kHz, 4V ≤ VIN ≤ 36V,
0.8V ≤ VOUT ≤ 10V, IQ = 80μA
LT3845
Low IQ, High Voltage Synchronous Step-Down DC/DC
Controller
Adjustable Fixed Frequency 100kHz to 500kHz, 4V ≤ VIN ≤ 60V,
1.23V ≤ VOUT ≤ 36V, IQ = 120μA, TSSOP-16
MTOP2
SENSE1+
SENSE1–
VFB1
TRACK/SS2
ITH2
VFB2
SENSE2–
SENSE2+
ITH1
TRACK/SS1
PLLIN/MODE
SGND
EXTVCC
RUN1
RUN2
FREQ
PGOOD1
BG1
CITH1A 100pF
CITH1 470pF
CSS2 0.01μF
CSS1 0.01μF
CITH2 1000pF
CITH2A
100pF
C1
1nF
COUT1
180μF
RA1
6.98k
RITH1
34.8k
RB1
100k
RB2
100k
RFREQ
41.2k
RITH2
34.8k
MTOP1, MTOP2, MBOT1, MBOT2: RJK0651DPB
L1: COILCRAFT SER1360-802KL
L2: COILCRAFT SER1360-472KL
COUT1: 16SVP180MX
COUT2: SANYO 6TPE470M
D1, D2: DFLS1100
D1
D2
LTC3890-1
RSENSE1
9mΩ
RSENSE2
10mΩ
L1
8μH
L2
4.7μH
MBOT1
TG1
MTOP1
VOUT1
12V
3A
VIN
12.5V TO 60V
38901 TA06
INTVCC
100k
CB1
0.47μF
RA2
31.6k
SW1
VOUT2
3.3V
5A
SW2
BOOST1
CB2 0.47μF
BOOST2
VIN
INTVCC
PGND
TG2
BG2
COUT2
470μF
CINT
4.7μF
CIN
220μF
MBOT2
C2
1nF
相关PDF资料 |
PDF描述 |
|---|---|
| LTC3890IGN-1#TRPBF | SWITCHING CONTROLLER, PDSO28 |
| LTC3890IGN-1#PBF | SWITCHING CONTROLLER, PDSO28 |
| LTC3890MPUH#TRPBF | DUAL SWITCHING CONTROLLER, 585 kHz SWITCHING FREQ-MAX, PQCC32 |
| LTC3890EUH#PBF | DUAL SWITCHING CONTROLLER, 585 kHz SWITCHING FREQ-MAX, PQCC32 |
| LTC3890IUH#TRPBF | DUAL SWITCHING CONTROLLER, 585 kHz SWITCHING FREQ-MAX, PQCC32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3890EGN-3#PBF | 制造商:Linear Technology 功能描述:IC REG CTRLR BUCK PWM CM 28SSOP 制造商:Linear Technology 功能描述:DC-DC CONTROLLER BUCK 900KHZ 制造商:Linear Technology 功能描述:DC-DC CONTROLLER, BUCK, 900KHZ, SSOP-28 制造商:Linear Technology 功能描述:DC-DC CONTROLLER, BUCK, 900KHZ, SSOP-28; Primary Input Voltage:60V; No. of Outputs:2; No. of Pins:28; Operating Temperature Min:-40C; Operating Temperature Max:125C; Operating Temperature Range:-40C to +125C ;RoHS Compliant: Yes |
| LTC3890EGN-3#TRPBF | 制造商:Linear Technology 功能描述:IC REG CTRLR BUCK PWM CM 28SSOP |
| LTC3890EUH#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 特色产品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 标准包装:1 系列:PowerWise® PWM 型:电压模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.5 V ~ 18 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-5°C ~ 125°C 封装/外壳:32-WFQFN 裸露焊盘 包装:Digi-Reel® 产品目录页面:1303 (CN2011-ZH PDF) 其它名称:LM3754SQDKR |
| LTC3890EUH#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LTC3890EUH-2#PBF | 制造商:Linear Technology 功能描述:DC DC Cntrlr Dual-OUT Sync Step Down 4V to 60V Input 32-Pin QFN EP 制造商:Linear Technology 功能描述:DP-SWREG/Controller, 60V, Low IQ, Dual Output Synchronous Step-Down Controller |
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