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参数资料
| 型号： | MAX8862LESE+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 11/12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
70
60
A
B
OUT1
? V IN1 = 1V p-p
C IN1 = 1 μ F
C OUT1 = 3.3μF
70
65
60
55
A
OUT1
? V IN1 = 1V p-p
C IN1 = 1 μ F
I OUT1 = 100mA
50
40
C
50
45
40
35
B
30
20
A: I OUT1 = 1mA
B: I OUT1 = 10mA
C: I OUT1 = 100mA
30
25
20
A: C OUT1 = 100 μ F
B: C OUT1 = 10 μ F
0.01
0.1
1
10
100
0.1
1
10
100
1000
FREQUENCY (kHz)
Figure 5a. Power-Supply Rejection Ratio vs. Ripple Frequency
for Light and Heavy Loads
Noise
The MAX8862’s OUT1 exhibits about 2.5mVp-p, and
OUT2 exhibits 1mVp-p of noise under full-load condi-
tions. When using the MAX8862 for applications that
include analog-to-digital converters (ADCs) with resolu-
tions greater than 12 bits, consider the ADC’s power-
supply-rejection specifications.
PSRR and Operation
from Sources Other than Batteries
The MAX8862 is designed to achieve low dropout volt-
ages and low quiescent currents in battery-powered
systems. However, to gain these benefits; the device
must trade away power-supply noise rejection, as well
as swift response to supply variations and load tran-
sients. For a 1mA load current, power-supply rejection
typically changes from 58dB to 43dB when the input
frequency is changed from 1Hz to 10kHz. At higher fre-
quencies, the circuit depends primarily on the output
capacitor’s characteristics, and the PSRR increases
(Figure 5).
When operating from sources other than batteries, sup-
ply-noise rejection and transient response can be
improved by increasing the value of the input and out-
put capacitors and employing passive filtering tech-
niques. Do not use power supplies with ripple voltages
exceeding 200mV at 100kHz.
FREQUENCY (kHz)
Figure 5b. Power-Supply Rejection Ratio vs. Ripple Frequency
for Various Output Capacitors
Overshoot and Transient Considerations
The Typical Operating Characteristics section shows
power-up, line, and load-transient response graphs.
Typical transients for step changes in the load current
from 0mA to 300mA are 100mVp-p. During recovery
from shutdown, overshoot is minimized by the 1μF
input, and output capacitors (3.3μF for OUT1, and
2.2μF for OUT2).
Input-Output (Dropout) Voltage
A regulator’s minimum input-to-output voltage differen-
tial (or dropout voltage) determines the lowest usable
supply voltage. In battery-powered systems, this deter-
mines the useful end-of-life battery voltage. Since
P-channel MOSFETs are used as pass transistors, the
dropout voltage is the product of the R DS(ON) and the
load current (see the Electrical Characteristics).
___________________Chip Information
TRANSISTOR COUNT: 457
______________________________________________________________________________________
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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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