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| 型号： | MAX8862LESE+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 8/12页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 4.95V/ADJ 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，固定式或可调式 |
| 输出电压： | 4.95V，2 V ~ 11 V |
| 输入电压： | 2.5 V ~ 11.5 V |
| 电压 - 压降（标准）： | 0.16V @ 200mA，0.16V @ 100mA |
| 稳压器数量： | 2 |
| 电流 - 输出： | 250mA（最小），100mA（最小） |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
Low-Cost, Low-Dropout, Dual Linear Regulator
1N1
R1
OUT1
PWROK1
SHDN1
IN2
BIAS
1.25V
R2
R3
50mV
G1
80mV
MAX8862
SET1
GND
GND
OUT
SHDN2
REF2
BIAS
1.25V
G1
SET2
R4
80mV
GND
GND
Figure 1. Functional Diagram
Output Voltage Selection
The MAX8862’s Dual Mode operation allows a fixed or
adjustable output voltage. In preset/internal-feedback
mode (SET1/SET2 = GND), output voltages are factory
preset to 4.95V (L), 3.175V (T), or 2.85V (R).
In adjustable/external feedback mode, output voltage is
adjusted between 2V and 11V with two external resis-
tors connected as a voltage divider to SET1/SET2
(Figure 2). Since the input bias current at SET1/SET2 is
<0.1μA, large resistance values can be used for R1
and R2 to minimize power consumption without losing
accuracy. Select R2 in the 10k ? to 400k ? range. R1 is
given by:
R1 = R2 (V OUT / V SET - 1)
where V SET = 1.25V.
Power-Good Comparator
The MAX8862’s main regulator features a power-good
indicator that asserts when the output voltage falls out
of regulation. In internal-feedback mode, the open-
drain PWROK1 output goes low when OUT1 falls 4%
below its nominal value. When used in external feed-
back mode, PWROK1 goes low when V SET1 falls below
1.2V. A 100k ? pull-up resistor from PWROK1 to V IN1
provides a logic-control signal. This resistor also mini-
mizes current flow to the input in case the battery is
reversed. PWROK1 can be used to reset a microcon-
troller or to drive an external LED for indicating a power
failure.
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8862RCSE | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8862RESE | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX8862RESE+ | 功能描述:低压差稳压器 - LDO Dual Linear Regulator RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX8862RESE+T | 功能描述:低压差稳压器 - LDO Dual Linear Regulator RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX8862RESE-T | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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