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| 型号： | LT3433EFE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BST ADJ 0.5A 16TSSOP |
| 标准包装： | 95 |
| 类型： | 降压（降压），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 3.3 V ~ 20 V |
| 输入电压： | 4 V ~ 60 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 200kHz |
| 电流 - 输出： | 500mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 16-TSSOP-EP |
| 产品目录页面： | 1331 (CN2011-ZH PDF) |
LT3433
ELECTRICAL CHARACTERISTICS
The q denotes specifications that apply over the full operating temperature range, otherwise specifications are at T A = 25 ° C.
V IN = 13.8V, V FB = 1.25V, V OUT = 5V, V BURST_EN = 0V, V BST – V IN = 5V, unless otherwise noted.
SYMBOL
V FB
PARAMETER
Feedback Reference Voltage
CONDITIONS
MIN
1.224
TYP
1.231
MAX
1.238
UNITS
V
q
1.215
1.245
V
? V FB
I FB
Feedback Reference Line Regulation
V FB Pin Input Bias Current
5.5V ≤ V IN ≤ 60V
q
q
0.002
35
0.01
100
%/V
nA
g m
Error Amplifier Transconductance
q
200
270
330
umhos
A V
I SW /V VC
Error Amplifier Voltage Gain
Control Voltage to Switch Transconductance
66
0.6
dB
A/V
f O
Operating Frequency
V FB > 1V
185
200
215
kHz
q
170
230
kHz
Foldback Frequency
V FB = 0V
50
kHz
V BURST_EN
Burst Enable Threshold
0.8
V
I BURST_EN
Input Bias Current
V BURST_EN ≥ 2V
35
μ A
t ON(MIN)
t OFF(MIN)
Minimum Switch On Time
Minimum Switch Off Time
R L = 35 ? (Note 4)
R L = 35 ? (Note 4)
q
q
250
500
450
800
ns
ns
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Supply current specification does not include switch drive
currents. Actual supply currents will be higher.
Note 3: “Normal Operation” supply current specification does not include
I BIAS currents. Powering the V BIAS pin externally reduces I CC supply
current.
Note 4: Minimum times are tested using the high side switch with a 35 ?
load to ground.
Note 5: This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. Junction
temperature will exceed 125 ° C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
Note 6: The LT3433E is guaranteed to meet performance specifications
from 0 ° C to 125 ° C junction temperature. Specifications over the – 40 ° C to
125 ° C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3433I is guaranteed over the full –40 ° C to 125 ° C operating junction
temperature range.
TYPICAL PERFOR A CE CHARACTERISTICS
500
400
Maximum Output Current
vs V IN
BUCK
V OUT = 5V
T A = 25 ° C
2.8
V BIAS Output Voltage
vs Temperature
620
590
V IN Supply Current
vs V IN Supply Voltage
T A = 25 ° C
2.6
300
560
200
100
BRIDGED
SEE TYPICAL APPLICATION
ON THE FIRST PAGE OF
2.4
530
0
0
10
20
THIS DATA SHEET
30 40
50
60
2.2
–50
0 50
100
125
500
0
15
30
45
60
V IN (V)
3433 G11
TEMPERATURE ( ° C)
3433 G01
V IN (V)
3433 G02
3433f
3
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| LT3433IFE | 功能描述:IC REG BUCK BST ADJ 0.5A 16TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LT3433IFE#PBF | 功能描述:IC REG BUCK BST ADJ 0.5A 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LT3433IFE#TR | 功能描述:IC REG BUCK BST ADJ 0.5A 16TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LT3433IFE#TRPBF | 功能描述:IC REG BUCK BST ADJ 0.5A 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LT3433IFEPBF | 制造商:Linear Technology 功能描述:DC-DC Converter Step-Up/Down 60V TSSOP16 |
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