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| 型号： | MAX8902AATA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/9页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .5A 8TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.5 V ~ 4.7 V |
| 输入电压： | 1.7 V ~ 5.5 V |
| 电压 - 压降（标准）： | 0.15V @ 500mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 500mA |
| 电流 - 限制（最小）： | 600mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-TDFN-EP（2x2） |
| 包装： | 标准包装 |
| 其它名称： | MAX8902AATA+TDKR |
MAX8902A/MAX8902B
Low-Noise 500mA LDO Regulators
in a 2mm x 2mm TDFN Package
Pin Description
PIN
NAME
MAX8902A MAX8902B
FUNCTION
1
2
3
IN
GND
EN
IN
GND
EN
Regulator Power Input. Connect IN to a supply from 1.7V to 5.5V. Bypass IN with a 10μF
ceramic capacitor to GND.
Ground
Enable Input. A logic-low drives the output low through a 3k resistor and reduces the supply
current to less than 1μA. Drive logic-high or connect to IN for normal operation.
Output Voltage Select Input. Connect SELA to GND, IN, or leave unconnected. The states of
4
SELA
—
—
GS
SELA and SELB are sampled when the regulator turns on and the output voltage is set as
shown in Table 2.
Internally Used. Connect GS to GND.
Output Voltage Select Input. Connect SELB to GND, IN, or leave unconnected. The states of
SELB
—
SELA and SELB are sampled when the regulator turns on and the output voltage is set as
shown in Table 2.
5
Power-OK Output. Open-drain output that goes low when the output is above 91% of the
—
POK
nominal regulation voltage. POK is high impedance in shutdown or when the output is below
the regulation voltage.
6
OUTS
—
—
FB
Output Sense Input. Connect OUTS to the load at a point where accurate regulation is
required, or connect OUTS directly to OUT.
Feedback Input. Connect FB to the center of a resistor voltage-divider connected between
OUT and GND to set the output voltage. V FB regulates to 0.6V.
Bypass Input. Connect a 0.01 μF ceramic capacitor from BYP to OUT to achieve 16μV RMS
7
BYP
BYP
output noise. Adjust the value of this capacitor to control the output slew rate during startup.
Slew Rate = (5V / ms) x (0.01μF / C BYP )
8
—
OUT
EP
OUT
EP
Regulator Output. Sources up to 500mA at the output regulation voltage. Bypass with a 10μF
(< 0.03 ESR) capacitor to GND.
Exposed Paddle. Connect the exposed paddle to a ground plane to provide heat sinking.
Detailed Description
The MAX8902A/MAX8902B low-noise, low-dropout lin-
ear regulators deliver up to 500mA of output current
with only 16μV RMS of output noise in a 100kHz band-
width. These regulators maintain their output voltage
over a wide input range, requiring only 100mV of input-
to-output headroom at full load.
The MAX8902 maintains a low 80μA typical supply cur-
rent, independent of the load current and dropout volt-
age. The regulator control circuitry includes a
programmable soft-start circuit and short circuit,
reverse current, and thermal-overload protection. Other
features include an enable input and a power-OK
Maxim Integrated
( POK ) output (MAX8902B only). A simplified functional
diagram is shown in Figure 1.
The MAX8902A output voltage can be set to 1.5V, 1.8V,
2.0V, 2.5V, 3.0V, 3.1V, 3.3V, 4.6V, or 4.7V using the
SELA and SELB inputs. The MAX8902B output voltage
can be set between 0.6V and 5.3V with an external
resistor voltage-divider.
Enable (EN)
The MAX8902A/MAX8902B include an enable input,
EN. Pull EN low to shut down the output, or drive EN
high to enable the output. If shutdown is not needed,
connect EN to IN.
5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8902BATA/V+ | 制造商:Maxim Integrated Products 功能描述:LOW-NOISE 500MA LDO REGULATORS IN A 2MM X 2MM TDFN PACKAGE - Rail/Tube |
| MAX8902BATA/V+T | 功能描述:低压差稳压器 - LDO 150mA LDO 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 |
| MAX8902BATA+ | 制造商:Maxim Integrated Products 功能描述:LOW-NOISE 500MA LDO REGULATORS IN A 2MM X 2MM TDFN PACKAGE - Rail/Tube |
| MAX8902BATA+T | 功能描述:低压差稳压器 - LDO 500mA LDO 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 |
| MAX8902EVKIT+ | 功能描述:电源管理IC开发工具 Evaluation Kit for the MAX8902A and MAX8902B RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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