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MAX8865R, MAX8865S, MAX8865T, MAX8866R, MAX8866S, MAX8866T
Dual, Low-Dropout, 100mA Linear Regulators
Dual 100mA LDOs Fit in Only 0.024 Sq. Inch and 1.11mm Height
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Status
Active: In Production.
Description
The MAX8865 and MAX8866 dual, low-dropout linear regulators operate from a +2.5V to +5.5V input range and deliver up to 100mA. At 200mA total load, the PMOS pass transistors keep the supply current at 145µA, making these devices ideal for battery-operated portable equipment such as cellular phones, cordless phones, and modems.
The devices feature Dual Mode™ operation: their output voltages are preset (at 3.15V for the "T" versions, 2.84V for the "S" versions, or 2.80V for the "R" versions) or can be adjusted with external resistor dividers. Other features include independent low-power shutdown, short-circuit protection, thermal shutdown protection, and reverse battery protection. The MAX8866 also includes an auto-discharge function, which actively discharges the selected output voltage to ground when the device is placed in shutdown mode. Both devices come in a miniature 8-pin µMAX® package.
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Data Sheet
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Key Features
- Low Cost
- Low, 55mV Dropout Voltage @ 50mA IOUT
- Low, 105µA No-Load Supply Current
- Low, 145µA Operating Supply Current (even in dropout)
- Low, 350µVRMS Output Noise
- Independent, Low-Current Shutdown Control
- Thermal Overload Protection
- Output Current Limit
- Reverse Battery Protection
- Dual Mode Operation: Fixed or Adjustable (1.25V to 5.5V) Outputs
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Applications/Uses
- Audio Systems
- Cordless Phones
- Electronic Planners
- Handheld Instruments (PDAs, Palmtops)
- Modems
- Palmtop Computers
- PCMCIA Cards
- PCS Telephones
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Key Specifications:
| Linear Regulators |
| Part Number |
Regulators |
VIN
(V) |
VIN
(V) |
Preset VOUT
(V) |
Adj. VOUT
(V) |
Adj. VOUT
(V) |
VDROPOUT @Rated ILOAD
(V) |
Rated ILOAD
(mA) |
ICC
(µA) |
Output Voltage Noise
(µV RMS) |
Ref. Bypass |
Low Batt./ Pwr. Fail Out |
Watchdog |
Reverse Batt. Protect. |
Oper. Temp.
(°C) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| min |
max |
min |
max |
typ |
max |
typ |
max w/pins |
See Notes |
| MAX8865 |
2 |
2.5 |
5.5 |
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1.3 |
5.5 |
0.11 |
100 |
270 |
220 |
No |
No |
No |
Yes |
-40 to +85 |
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15.6 |
$1.21 @1k |
| MAX8866 |
1.5 |
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$1.21 @1k |
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See All Linear Regulators (149)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
 Typical Operating Circuit
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-0485
Rev 0;
1996-04-01
This page last modified: 2007-11-06
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