Datasheet MAX8887, MAX8888 (Maxim) - 5
| 制造商 | Maxim |
| 描述 | Low-Dropout, 300mA Linear Regulators in SOT23 |
| 页数 / 页 | 9 / 5 — Low-Dropout, 300mA Linear Regulators in SOT23. MAX8887/MAX8888. Typical … |
| 文件格式/大小 | PDF / 238 Kb |
| 文件语言 | 英语 |
Low-Dropout, 300mA Linear Regulators in SOT23. MAX8887/MAX8888. Typical Operating Characteristics (continued)
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Low-Dropout, 300mA Linear Regulators in SOT23 MAX8887/MAX8888 Typical Operating Characteristics (continued)
(Typical Operating Circuit, TA = +25°C, unless otherwise noted.)
LOAD-TRANSIENT RESPONSE NEAR DROPOUT LINE-TRANSIENT RESPONSE
MAX8887/8 toc12 MAX8887/8 toc13 300mA 4.5V IOUT 10mA VIN 4V VOUT 50mV/div AC-COUPLED VOUT 20mV/div AC-COUPLED VOUT = 3.3V VOUT = 3.3V VIN = 3.4V ILOAD = 100mA 10µs/div 100µs/div
SHUTDOWN WAVEFORM POK WAVEFORM
MAX8887/8 toc14 MAX8887/8 toc15 V V SHDN OUT = 3.3V, RLOAD = 100Ω VIN 2V/div 2V/div VOUT 2V/div VOUT 1V/div VPOK 2V/div DC-COUPLED VOUT = 3.3V, RLOAD = 10Ω 20µs/div 20ms/div
Pin Description MAX8887 MAX8888 NAME FUNCTION
Regulator Input. Supply voltage can range from 2.5V to 5.5V. Bypass with 2.2µF 1 1 IN capacitor to GND (see the Capacitor Selection and Regulator Stability section). 2 2 GND Ground 3 3 SHDN Active-Low Shutdown Input. A logic low reduces the supply current to below 0.1µA. In shutdown, POK and OUT are driven low. Connect to IN for normal operation. Open-Drain Active-Low POK Output. POK remains low while the output voltage (VOUT) is — 4 POK below the reset threshold. Connect a 100kΩ pullup resistor to OUT to obtain a logic level output. POK is driven low in shutdown. If not used, leave this pin unconnected. 4 — BP Reference Bypass. Bypass with a low-leakage 0.01µF ceramic capacitor. Regulator Output. Sources up to 300mA guaranteed. Bypass with 2.2µF (<0.2Ω typical 5 5 OUT ESR) ceramic capacitor to GND.
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(Typical Operating Circuit, TA = +25°C, unless otherwise noted.)
LOAD-TRANSIENT RESPONSE NEAR DROPOUT LINE-TRANSIENT RESPONSE
MAX8887/8 toc12 MAX8887/8 toc13 300mA 4.5V IOUT 10mA VIN 4V VOUT 50mV/div AC-COUPLED VOUT 20mV/div AC-COUPLED VOUT = 3.3V VOUT = 3.3V VIN = 3.4V ILOAD = 100mA 10µs/div 100µs/div
SHUTDOWN WAVEFORM POK WAVEFORM
MAX8887/8 toc14 MAX8887/8 toc15 V V SHDN OUT = 3.3V, RLOAD = 100Ω VIN 2V/div 2V/div VOUT 2V/div VOUT 1V/div VPOK 2V/div DC-COUPLED VOUT = 3.3V, RLOAD = 10Ω 20µs/div 20ms/div
Pin Description MAX8887 MAX8888 NAME FUNCTION
Regulator Input. Supply voltage can range from 2.5V to 5.5V. Bypass with 2.2µF 1 1 IN capacitor to GND (see the Capacitor Selection and Regulator Stability section). 2 2 GND Ground 3 3 SHDN Active-Low Shutdown Input. A logic low reduces the supply current to below 0.1µA. In shutdown, POK and OUT are driven low. Connect to IN for normal operation. Open-Drain Active-Low POK Output. POK remains low while the output voltage (VOUT) is — 4 POK below the reset threshold. Connect a 100kΩ pullup resistor to OUT to obtain a logic level output. POK is driven low in shutdown. If not used, leave this pin unconnected. 4 — BP Reference Bypass. Bypass with a low-leakage 0.01µF ceramic capacitor. Regulator Output. Sources up to 300mA guaranteed. Bypass with 2.2µF (<0.2Ω typical 5 5 OUT ESR) ceramic capacitor to GND.
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