参数资料
| 型号： | LT3071EUFD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 12/28页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 5A 28QFN |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 0.8 V ~ 1.8 V |
| 输入电压： | 0.95 V ~ 3 V |
| 电压 - 压降（标准）： | 0.085V @ 5A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 5A |
| 电流 - 限制（最小）： | 5.1A |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-QFN（4x5） |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页当前第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
LT3071
PIN FUNCTIONS
I MON (Pin 21): Output Current Monitor. The I MON pin
sources a current typically equal to I OUT /2500 or 400μA
per amp of output current. Terminating this pin with a
resistor to GND produces a voltage proportional to I OUT .
For example, at I OUT = 5A, I MON typically sources 2mA.
With a 1k resistor to GND, this produces 2V. If I MON is
unused, tie this pin to V BIAS .
MARGA (Pin 22): Analog Margining. This pin margins the
output voltage over a continuous analog range of ±10%.
Tying this pin to GND adjusts output voltage by –10%.
Driving this pin to 1.2V adjusts output voltage by +10%. A
voltage source or a voltage output DAC is ideal for driving
this pin. If the MARGA function is not used, either float
this pin or terminate with a 1nF capacitor to GND.
V O0 , V O1 and V O2 (Pins 23, 24, 25): Output Voltage Se-
lect. These three-state pins combine to select a nominal
output voltage from 0.8V to 1.8V in increments of 50mV.
Output voltage is limited to 1.8V maximum by an internal
override of V O1 when V O2 = high . The input logic low
threshold is less than 250mV referenced to GND and the
logic high threshold is greater than V BIAS – 250mV. The
range between these two thresholds as set by a window
comparator defines the logic Hi-Z state. See Table 1 in the
Applications Information section that defines the V O2 , V O1
and V O0 settings versus V OUT .
BIAS (Pin 27): Bias Supply. This pin supplies current to
the internal control circuitry and the output stage driving
the pass transistor. The LT3071 requires a minimum 2.2μF
bypass capacitor for stability and proper operation. To
ensure proper operation, the BIAS voltage must satisfy
the following conditions: 2.2V ≤ V BIAS ≤ 3.6V and V BIAS ≥
(1.25 ? V OUT + 1V). For V OUT ≤ 0.95V, the minimum BIAS
voltage is limited to 2.2V.
EN (Pin 28): Enable. This pin enables/disables the output
device only. The internal reference and all support functions
are active if V BIAS is above its UVLO threshold. Pulling EN
low keeps the reference circuit active, but disables the
output pass transistor and puts the LT3071 into a low
power nap mode. The maximum rising EN threshold is
ratioed to 0.56% of V BIAS and the minimum falling ENx
threshold is 0.36% of V BIAS . Drive the EN pin with either
a digital logic port or an open-collector NPN or an open-
drain NMOS terminated with a pull-up resistor to V BIAS .
The pull-up resistor must be less than 35k to meet the V IH
condition of the EN pin. If unused, connect EN to BIAS.
+
V BIAS
EN
BIAS
PWRGD
IN
SENSE
+
V IN
V O0 LT3071
V O1
V O2
MARGA
OUT
I MON
R P
LOAD
VIOC
REF/BYP
GND
R P
3071 F01
Figure 1. Kelvin Sense Connection
3071fb
12
For more information www.linear.com/3071
相关PDF资料 |
PDF描述 |
|---|---|
| LT1085IM-3.6 | IC REG LDO 3.6V 3A DDPAK-3 |
| LT1084CP-5#PBF | IC REG LDO 5V 5A TO-3P-3 |
| ASC36DRYN | CONN EDGECARD 72POS .100 DIP SLD |
| ASC35DRYI | CONN EDGECARD 70POS .100 DIP SLD |
| ASC36DRYH | CONN EDGECARD 72POS .100 DIP SLD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3071IUFD | 制造商:LINER 制造商全称:Linear Technology 功能描述:5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator with Analog Margining |
| LT3071IUFD#PBF | 功能描述:IC REG LDO ADJ 5A 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式 输出电压:2.5V 输入电压:2.5 V ~ 5.5 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:300mA（最小值） 电流 - 限制（最小）:360mA 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 供应商设备封装:TSOT-23-5 包装:带卷 (TR) |
| LT3071IUFD#TRPBF | 功能描述:IC REG LDO ADJ 5A 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式 输出电压:2.5V 输入电压:2.5 V ~ 5.5 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:300mA（最小值） 电流 - 限制（最小）:360mA 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 供应商设备封装:TSOT-23-5 包装:带卷 (TR) |
| LT3071IUFD-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator with Analog Margining |
| LT3071IUFD-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator with Analog Margining |
发布紧急采购，3分钟左右您将得到回复。