Datasheet MAX8887, MAX8888 (Maxim)
| 制造商 | Maxim |
| 描述 | Low-Dropout, 300mA Linear Regulators in SOT23 |
| 页数 / 页 | 9 / 1 — Low-Dropout, 300mA Linear Regulators in SOT23. MAX8887/MAX8888. General … |
| 文件格式/大小 | PDF / 238 Kb |
| 文件语言 | 英语 |
Low-Dropout, 300mA Linear Regulators in SOT23. MAX8887/MAX8888. General Description. Features
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文件文字版本
19-1859; Rev 4; 7/09
Low-Dropout, 300mA Linear Regulators in SOT23 MAX8887/MAX8888 General Description Features
The MAX8887/MAX8888 low-dropout linear regulators ♦
Guaranteed 300mA Output Current (500mA for
operate from a 2.5V to 5.5V input and deliver up to
Pulsed Loads)
300mA continuous (500mA pulsed) current. The ♦
Low 100mV Dropout at 200mA Load
MAX8887 is optimized for low-noise operation, while the ♦
POK Output (MAX8888)
MAX8888 includes an open-drain power-OK (POK) ouput ♦
42µVRMS Output Noise (MAX8887)
flag. Both regulators feature exceptionally low 100mV dropout at 200mA. These devices are available in a vari- ♦
Preset Output Voltages (1.5V, 1.8V, 2.85V, and 3.3V)
ety of preset output voltages in the 1.5V to 3.3V range. ♦
55µA No-Load Supply Current
An internal PMOS pass transistor allows the low 55µA supply current to remain independent of load, making ♦
Thermal-Overload and Short-Circuit Protection
these devices ideal for portable battery-powered equip- ♦
Foldback Output Current-Limit Protection
ment such as personal digital assistants (PDAs), cellu- ♦
60dB PSRR at 1kHz
lar phones, cordless phones, and notebook computers. ♦
0.1µA Shutdown Current
Other features include a micropower shutdown mode, ♦
Thin 5-Pin SOT23 Package, 1mm High
short-circuit protection, thermal shutdown protection, and an active-low open-drain POK output that indicates
Ordering Information
when the output is out of regulation. The MAX8887/MAX8888 are available in a thin 5-pin SOT23
TEMP PIN- T O P
package that is only 1mm high.
PART RANGE PACKAGE MARK M A X8 8 8 7
E Z K15+ T -40°C to +85°C 5 SOT23 ADQD MAX8887EZK18+ T -40°C to +85°C 5 SOT23 ADPX
________________________Applications
MAX8887EZK29+ T -40°C to +85°C 5 SOT23 ADPY MAX8887EZK33+ T -40°C to +85°C 5 SOT23 ADPZ Notebook Computers MAX8887EZKxy+ T* -40°C to +85°C 5 SOT23 — Wireless Handsets
M A X8 8 8 8
E Z K15+ T -40°C to +85°C 5 SOT23 ADQE PDAs and Palmtop Computers MAX8888EZK18+ T -40°C to +85°C 5 SOT23 ADQA Digital Cameras MAX8888EZK18/V+ T -40°C to +85°C 5 SOT23 — PCMCIA Cards MAX8888EZK29+ T -40°C to +85°C 5 SOT23 ADQB Hand-Held Instruments MAX8888EZK33+ T -40°C to +85°C 5 SOT23 ADQC MAX8888EZKxy+ T* -40°C to +85°C 5 SOT23 — *Other versions (xy) between +1.5 and +3.3V are available in 100mV increments. Contact factory for other versions. Minimum order quantity is 25,000 units. +Denotes a lead(Pb)-free RoHS-compliant package.
Typical Operating Circuit
/V denotes an automotive qualified part. V
Pin Configurations
INPUT OUT 2.5V TO 5.5V 300mA IN OUT TOP VIEW CIN COUT 2.2µF MAX8887 2.2µF MAX8888 IN 1 5 OUT IN 1 5 OUT POK ON MAX8887 MAX8888 SHDN GND 2 GND 2 (BP) OFF GND CBP 0.01µF SHDN 3 4 BP SHDN 3 4 POK ( ) ARE FOR MAX8887 ONLY.
________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Low-Dropout, 300mA Linear Regulators in SOT23 MAX8887/MAX8888 General Description Features
The MAX8887/MAX8888 low-dropout linear regulators ♦
Guaranteed 300mA Output Current (500mA for
operate from a 2.5V to 5.5V input and deliver up to
Pulsed Loads)
300mA continuous (500mA pulsed) current. The ♦
Low 100mV Dropout at 200mA Load
MAX8887 is optimized for low-noise operation, while the ♦
POK Output (MAX8888)
MAX8888 includes an open-drain power-OK (POK) ouput ♦
42µVRMS Output Noise (MAX8887)
flag. Both regulators feature exceptionally low 100mV dropout at 200mA. These devices are available in a vari- ♦
Preset Output Voltages (1.5V, 1.8V, 2.85V, and 3.3V)
ety of preset output voltages in the 1.5V to 3.3V range. ♦
55µA No-Load Supply Current
An internal PMOS pass transistor allows the low 55µA supply current to remain independent of load, making ♦
Thermal-Overload and Short-Circuit Protection
these devices ideal for portable battery-powered equip- ♦
Foldback Output Current-Limit Protection
ment such as personal digital assistants (PDAs), cellu- ♦
60dB PSRR at 1kHz
lar phones, cordless phones, and notebook computers. ♦
0.1µA Shutdown Current
Other features include a micropower shutdown mode, ♦
Thin 5-Pin SOT23 Package, 1mm High
short-circuit protection, thermal shutdown protection, and an active-low open-drain POK output that indicates
Ordering Information
when the output is out of regulation. The MAX8887/MAX8888 are available in a thin 5-pin SOT23
TEMP PIN- T O P
package that is only 1mm high.
PART RANGE PACKAGE MARK M A X8 8 8 7
E Z K15+ T -40°C to +85°C 5 SOT23 ADQD MAX8887EZK18+ T -40°C to +85°C 5 SOT23 ADPX
________________________Applications
MAX8887EZK29+ T -40°C to +85°C 5 SOT23 ADPY MAX8887EZK33+ T -40°C to +85°C 5 SOT23 ADPZ Notebook Computers MAX8887EZKxy+ T* -40°C to +85°C 5 SOT23 — Wireless Handsets
M A X8 8 8 8
E Z K15+ T -40°C to +85°C 5 SOT23 ADQE PDAs and Palmtop Computers MAX8888EZK18+ T -40°C to +85°C 5 SOT23 ADQA Digital Cameras MAX8888EZK18/V+ T -40°C to +85°C 5 SOT23 — PCMCIA Cards MAX8888EZK29+ T -40°C to +85°C 5 SOT23 ADQB Hand-Held Instruments MAX8888EZK33+ T -40°C to +85°C 5 SOT23 ADQC MAX8888EZKxy+ T* -40°C to +85°C 5 SOT23 — *Other versions (xy) between +1.5 and +3.3V are available in 100mV increments. Contact factory for other versions. Minimum order quantity is 25,000 units. +Denotes a lead(Pb)-free RoHS-compliant package.
Typical Operating Circuit
/V denotes an automotive qualified part. V
Pin Configurations
INPUT OUT 2.5V TO 5.5V 300mA IN OUT TOP VIEW CIN COUT 2.2µF MAX8887 2.2µF MAX8888 IN 1 5 OUT IN 1 5 OUT POK ON MAX8887 MAX8888 SHDN GND 2 GND 2 (BP) OFF GND CBP 0.01µF SHDN 3 4 BP SHDN 3 4 POK ( ) ARE FOR MAX8887 ONLY.
________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.