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参数资料
| 型号： | LTC3456 |
| 厂商： | Linear Technology Corporation |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 2-Cell, Multi-Output DC/DC Converter with USB Power Manager |
| 中文描述： | 2节电池，多输出DC / DC转换器与USB电源管理器 |
| 文件页数： | 3/28页 |
| 文件大小： | 358K |
| 代理商： | LTC3456 |
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3
LTC3456
3456f
ELECTRICAL CHARACTERISTICS
The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25
°
C.
V
BATT
= 2.4V, V
INT
= 3.3V, V
PWRON
= 2V, PWRKEY is open, V
USB
= 0V, V
WALLFB
= 0V, unless otherwise specified.
PARAMETER
CONDITIONS
Switch Leakage (USB/Wall Powered)
V
EXT
= 5V, V
WALLFB
= 1.5V
SW2_BK PMOS Switch
V
SW2_BK
= 0V
SW2_BK NMOS Switch
V
SW2_BK
= 5V
Switch On-Resistance (USB/Wall Powered)
V
EXT
= 5V, V
WALLFB
= 1.5V
SW2_BK PMOS Switch
I
SW2_BK
= 150mA
SW2_BK NMOS Switch
I
SW2_BK
= –150mA
Switch Current Limit
Battery Powered (SW2_BST NMOS Current)
V
BATT
= 2.4V
Wall/USB Powered (SW2_BK PMOS Current)
V
EXT
= 5V, V
WALLFB
= 1.5V
V
MAIN
PMOS Switch On-Resistance
Measured Between V
INT
and V
MAIN
Pins
V
MAIN
Turn-On Delay
After FB1 and V
INT
in Regulation
Battery Powered
V
BATT
= 2.4V
USB or Wall Powered
V
EXT
= 5V, V
WALLFB
= 1.5V
Hot Swap Output
HSO PMOS Switch On-Resistance
Measured Between V
INT
and HSO Pins
HSO PMOS Switch Current Limit
V
INT
= 3.3V, V
HSO
= 2.5V
HSO Turn-On Delay
After FB1 and V
INT
in Regulation
Battery Powered
V
BATT
= 2.4V
USB or Wall Powered
V
EXT
= 5V, V
WALLFB
= 1.5V
V
MAX
Output
V
MAX
Output Voltage
V
MAX
Output Unloaded
Shutdown
V
PWRON
= 0V
Battery Powered
V
PWRON
= 2V, V
BATT
= 2.4V
USB/Wall Powered
V
PWRON
= 2V, V
EXT
= 5V, V
WALLFB
= 1.5V
Maximum V
MAX
Output Current
V
MAX
Output < 12.5% Below Nominal Value
Core Output
FB1 Voltage
FB1 Voltage Line Regulation
V
BATT
= 1.8V to 3.2V
FB1 Pin Input Bias Current
V
FB1
= 0.8V
Duty Cycle Range
Buck Switchers
SW1 PMOS Switch Current Limit
Battery Powered
V
BATT
= 2.4V
Wall/USB Powered
V
EXT
= 5V
SW1 Leakage Current
V
SW1
= 0V, V
EXT
= 5V or V
BATT
= 5V
SW1 PMOS Switch On-Resistance
I
SW1
= 150mA
Battery Powered
V
BATT
= 2.4V
Wall/USB Powered
V
EXT
= 5V, V
WALLFB
= 1.5V
SW1 NMOS Switch On-Resistance
I
SW1
= –150mA
Battery Powered
V
BATT
= 2.4V
Wall/USB Powered
V
EXT
= 5V, V
WALLFB
= 1.5V
MIN
TYP
MAX
UNITS
0.1
0.1
1
1
μ
A
μ
A
0.9
0.4
700
400
900
500
0.4
mA
mA
●
●
0.8
1.5
2
2
ms
ms
0.8
120
90
mA
●
●
0.5
0.5
1
1
ms
ms
V
BATT
3.3
5
V
V
V
●
1
mA
●
0.784
0.800
0.1
±
2
0.816
0.5
±
20
100
V
●
%/V
nA
●
●
0
%
400
350
550
450
0.1
mA
mA
μ
A
1
0.5
0.5
0.4
0.4
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相关代理商/技术参数 |
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|---|---|
| LTC3456EUF | 制造商:Linear Technology 功能描述:Power Management System 24-Pin QFN EP |
| LTC3456EUF#PBF | 功能描述:IC CONV DC/DC USB BATT 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| LTC3456EUF#TRPBF | 功能描述:IC CONV DC/DC USB BATT 24-QFN RoHS:否 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| LTC3458 | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.7A, 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect |
| LTC3458EDE | 功能描述:IC REG BOOST SYNC ADJ 1.4A 12DFN RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
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