参数资料
| 型号： | LT3070IUFD#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 13/28页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 5A 28QFN |
| 产品培训模块： | LT3070 - 5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator |
| 标准包装： | 73 |
| 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： | 管件 |
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LT3070
PIN FUNCTIONS
+
V BIAS
+
V IN
BIAS
EN SENSE
IN OUT
V O2 LT3070
V O1 PWRGD
V O0
MARGSEL
MARGTOL
VIOC REF/BYP
GND
R P
R P
3070 F01
LOAD
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 .
Figure 1. Kelvin Sense Connection
MARGSEL (Pin 21): Margining Enable and Polarity Selec-
tion. This three-state pin determines both the polarity and
the active state of the margining function. The logic low
threshold is less than 250mV referenced to GND and en-
ables negative voltage margining. The logic high threshold
is greater than V BIAS – 250mV and enables positive voltage
margining. The voltage range between these two logic
thresholds as set by a window comparator defines the
logic Hi-Z state and disables the margining function.
MARGTOL (Pin 22): Margining Tolerance. This three-
state pin selects the absolute value of margining (1%,
3% or 5%) if enabled by the MARGSEL input. The logic
low threshold is less than 250mV referenced to GND and
enables either ±1% change in V OUT depending on the state
of the MARGSEL pin. The logic high threshold is greater
than V BIAS – 250mV and enables either ±5% change in
V OUT depending on the state of the MARGSEL pin. The
voltage range between these two logic thresholds as set
by a window comparator defines the logic Hi-Z state and
enables either ±3% change in V OUT depending on the state
of the MARGSEL pin.
BIAS (Pin 27): Bias Supply. This pin supplies current to
the internal control circuitry and the output stage driving
the pass transistor. The LT3070 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 LT3070 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.
3070fb
For more information www.linear.com/LT3070
13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3070IUFDTR | 制造商:LINER 制造商全称:Linear Technology 功能描述:5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator |
| LT3070IUFDTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator |
| LT3070MPUFD | 制造商:LINER 制造商全称:Linear Technology 功能描述:5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator |
| LT3070MPUFD#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) |
| LT3070MPUFD#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) |
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