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参数资料
| 型号： | MAX1659ESA |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 350mA, 16.5V Input, Low-Dropout Linear Regulators |
| 中文描述： | FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, 0.875 V DROPOUT, PDSO8 |
| 封装： | 0.150 INCH, SOIC-8 |
| 文件页数： | 6/12页 |
| 文件大小： | 111K |
| 代理商： | MAX1659ESA |
M
350mA, 16.5V Input,
Low-Dropout Linear Regulators
6
_______________________________________________________________________________________
MAX1658
MAX1659
P
P
OUT
SET
IN
SHDN
MOSFET
DRIVER
WITH
CURRENT
LIMIT
R2
R1
65mV
GND
DUAL-MODE
COMPARATOR
1.21V
REFERENCE
THERMAL
SENSOR
ERROR
AMPLIFIER
Figure 1. Functional Diagram
_______________Detailed Desc ription
The MAX1658/MAX1659 are micropower, low-dropout
linear regulators featuring Dual Mode operation,
which allows them to deliver an adjustable (1.25V to
16.5V) or preset (3.3V for the MAX1658, 5V for
MAX1659) output. They supply up to 350mA while
requiring only 120μA of supply current (typically 30μA
with no load). The devices include thermal shutdown
circuitry, output current limiting, a P-channel pass tran-
sistor, a Dual Mode comparator, and a feedback volt-
age divider. Figure 1 shows the functional diagram.
The 1.21V reference is connected to the amplifier’s
inverting input. The error amplifier compares this refer-
ence with the selected feedback voltage and amplifies
the difference. The error signal applies the drive to the
P-channel pass transistor. If the feedback voltage is
lower than the reference voltage, the transistor’s gate is
pulled lower, increasing output current.
The output voltage is fed back through an internal
resistor network or an external user-selected network.
The Dual Mode comparator examines the voltage at the
SET pin and selects either the internal or external feed-
back path. If SET is below 65mV, internal feedback sets
the MAX1658’s output voltage to 3.3V and the
MAX1659’s to 5V. Otherwise, external feedback is used
for an adjustable output between 1.25V and 16.5V.
Additional features include internal current limiting,
reverse battery protection, thermal-overload protection,
and a 1μA shutdown mode.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1659ESA+ | 功能描述:低压差稳压器 - LDO 350mA 16.5V 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 |
| MAX1659ESA+T | 功能描述:低压差稳压器 - LDO 350mA 16.5V 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 |
| MAX1659ESA-T | 功能描述:低压差稳压器 - LDO 350mA 16.5V 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 |
| MAX165ACPN | 功能描述:模数转换器 - ADC Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX165ACPN+ | 功能描述:模数转换器 - ADC 8-Bit 200ksps 2.46V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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