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参数资料
| 型号： | MAX1658ESA |
| 厂商： | Maxim Integrated |
| 文件页数： | 6/12页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V/ADJ .35A 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 稳压器拓扑结构： | 正，固定式或可调式 |
| 输出电压： | 3.3V，1.25 V ~ 16 V |
| 输入电压： | 2.7 V ~ 16.5 V |
| 电压 - 压降（标准）： | 0.65V @ 350mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 350mA（最小） |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
350mA, 16.5V Input,
Low-Dropout Linear Regulators
IN
SHDN
P
THERMAL
SENSOR
1.21V
REFERENCE
ERROR
AMPLIFIER
MOSFET
DRIVER
WITH
CURRENT
P
LIMIT
OUT
R1
SET
R2
DUAL-MODE
MAX1658
COMPARATOR
MAX1659
65mV
GND
Figure 1. Functional Diagram
_______________Detailed Description
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.
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1658ESA+ | 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 |
| MAX1658ESA+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 |
| MAX1658ESA-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 |
| MAX1659C/D | 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 |
| MAX1659C/D+ | 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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