Datasheet MAX38911, MAX38912 (Maxim) - 4
| 制造商 | Maxim |
| 描述 | 11µVRMS Low-Noise, 500mA LDO Linear Regulators with Low-Power Mode |
| 页数 / 页 | 21 / 4 — PARAMETER. SYMBOL. CONDITIONS. MIN. TYP. MAX. UNITS. Note 1:. Note 2: |
| 文件格式/大小 | PDF / 1.3 Mb |
| 文件语言 | 英语 |
PARAMETER. SYMBOL. CONDITIONS. MIN. TYP. MAX. UNITS. Note 1:. Note 2:
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MAX38911/MAX38912 11µVRMS Low-Noise, 500mA LDO Linear Regulators with Low-Power Mode
(VIN = 3.6V, VOUT = 1.8V, TJ = -40˚C to +125˚C, CBYP = 10nF, CIN = 4.7µF, COUT = 4.7µF, MODE = HIGH, unless mentioned otherwise, Typical values are at TJ = +25˚C, unless otherwise specified)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Dropout Voltage I VIN = 3.6V 50 (MAX38911 TDFN, OUT = 500mA, V when MODE = V mV MAX38912) DO IN = 2.0V 70 HIGH (Note 2) VIN = 1.7V 100 Dropout Voltage I VIN = 3.6V 25 50 (MAX38911, OUT = 20mA, V when MODE = V mV MAX38912) DO IN = 2.0V 48 100 LOW (Note 2) VIN = 1.7V 75 150 MODE = HIGH, VOUTS/OUT = 0.9 x VNOMINAL, VOUT_NOMINAL = 1.8V, VIN – 600 700 800 Maximum Current Limit ILIM VOUT = 500mV mA MODE = LOW, VOUTS/OUT = 0.9 x 22 VNOMINAL, VOUT_NOMINAL = 1.8V BYP Capacitor Range CBYP 0.001 0.1 µF BYP Soft-Start Current From BYP to GND during startup 50 µA V V V IN from 1.7V to EN and VMODE IH 0.8 1.2 EN/MODE Input 5.5V rising V Threshold V V V IN from 1.7V to EN and VMODE IL 0.4 0.7 5.5V falling EN/MODE Input I T EN_LK, VEN and VMODE J = +25°C -1 0.001 1 µA Leakage Current IMODE_LK from 0 to 5.5V TJ = +125°C 0.01 POK Threshold V VOUT rising 91 (MAX38911 TDFN, OUT when POK % switches MAX38912) VOUT falling 88 POK Voltage Low (MAX38911 TDFN, VOL IPOK = 1mA 10 mV MAX38912) POK Leakage Current TJ = +25°C 0.001 (MAX38911 TDFN, IPOK_LK VPOK = 5.5V µA MAX38912) TJ = +125°C 0.01 IN Reverse Current V MODE = HIGH 200 OUT = 3.6V, when mA Threshold VIN falls to 0V MODE = LOW 10 Thermal Shutdown T TJ rising 165 J when output ˚C Threshold turns on/off TJ falling 150
Note 1:
Limits over the specified operating temperature and supply voltage range are guaranteed by design and characterization, and production tested at room temperature only.
Note 2:
Dropout voltage is defined as (VIN - VOUT) when VOUT is 95% of its nominal value. www.maximintegrated.com Maxim Integrated | 4 Document Outline General Description Applications Benefits and Features Application Diagram Absolute Maximum Ratings Package Information Electrical Characteristics Typical Operating Characteristics Pin Configurations Pin Descriptions Simplified Block Diagram Detailed Description Modes of Operation Low-Power Mode of Operation High-Power Mode of Operation MODE Transition Enable (EN) Bypass (BYP) Power-OK (POK) Protection Undervoltage Lockout (UVLO) Output Voltage Configuration MAX38911 Output Voltage Configuration MAX38912 Output Voltage Configuration Application Information Input and Output Capacitors Thermal Consideration Typical Application Circuits Ordering Information
MAX38911/MAX38912 11µVRMS Low-Noise, 500mA LDO Linear Regulators with Low-Power Mode
(VIN = 3.6V, VOUT = 1.8V, TJ = -40˚C to +125˚C, CBYP = 10nF, CIN = 4.7µF, COUT = 4.7µF, MODE = HIGH, unless mentioned otherwise, Typical values are at TJ = +25˚C, unless otherwise specified)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Dropout Voltage I VIN = 3.6V 50 (MAX38911 TDFN, OUT = 500mA, V when MODE = V mV MAX38912) DO IN = 2.0V 70 HIGH (Note 2) VIN = 1.7V 100 Dropout Voltage I VIN = 3.6V 25 50 (MAX38911, OUT = 20mA, V when MODE = V mV MAX38912) DO IN = 2.0V 48 100 LOW (Note 2) VIN = 1.7V 75 150 MODE = HIGH, VOUTS/OUT = 0.9 x VNOMINAL, VOUT_NOMINAL = 1.8V, VIN – 600 700 800 Maximum Current Limit ILIM VOUT = 500mV mA MODE = LOW, VOUTS/OUT = 0.9 x 22 VNOMINAL, VOUT_NOMINAL = 1.8V BYP Capacitor Range CBYP 0.001 0.1 µF BYP Soft-Start Current From BYP to GND during startup 50 µA V V V IN from 1.7V to EN and VMODE IH 0.8 1.2 EN/MODE Input 5.5V rising V Threshold V V V IN from 1.7V to EN and VMODE IL 0.4 0.7 5.5V falling EN/MODE Input I T EN_LK, VEN and VMODE J = +25°C -1 0.001 1 µA Leakage Current IMODE_LK from 0 to 5.5V TJ = +125°C 0.01 POK Threshold V VOUT rising 91 (MAX38911 TDFN, OUT when POK % switches MAX38912) VOUT falling 88 POK Voltage Low (MAX38911 TDFN, VOL IPOK = 1mA 10 mV MAX38912) POK Leakage Current TJ = +25°C 0.001 (MAX38911 TDFN, IPOK_LK VPOK = 5.5V µA MAX38912) TJ = +125°C 0.01 IN Reverse Current V MODE = HIGH 200 OUT = 3.6V, when mA Threshold VIN falls to 0V MODE = LOW 10 Thermal Shutdown T TJ rising 165 J when output ˚C Threshold turns on/off TJ falling 150
Note 1:
Limits over the specified operating temperature and supply voltage range are guaranteed by design and characterization, and production tested at room temperature only.
Note 2:
Dropout voltage is defined as (VIN - VOUT) when VOUT is 95% of its nominal value. www.maximintegrated.com Maxim Integrated | 4 Document Outline General Description Applications Benefits and Features Application Diagram Absolute Maximum Ratings Package Information Electrical Characteristics Typical Operating Characteristics Pin Configurations Pin Descriptions Simplified Block Diagram Detailed Description Modes of Operation Low-Power Mode of Operation High-Power Mode of Operation MODE Transition Enable (EN) Bypass (BYP) Power-OK (POK) Protection Undervoltage Lockout (UVLO) Output Voltage Configuration MAX38911 Output Voltage Configuration MAX38912 Output Voltage Configuration Application Information Input and Output Capacitors Thermal Consideration Typical Application Circuits Ordering Information