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MAX8940
Low-Noise, High PSRR, Low-Dropout, 120mA Linear Regulator
Space-Saving, Low-Noise, High PSRR, Low-Dropout 120mA LDO
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Status
Active: In Production.
Description
The MAX8940 low-noise, low-dropout (LDO) linear regulator is designed to deliver up to 120mA continuous output current. This regulator achieves a low 120mV dropout for 120mA load current. The MAX8940 uses an advanced architecture to achieve low output voltage noise of 25µVRMS and PSRR of 45dB at 100kHz.
The MAX8940 is preset to either 2.8V or 3.0V. Designed with a p-channel MOSFET series pass transistor, the MAX8940 maintain very low ground current (40µA).
The regulator is designed and optimized to work with low-value, low-cost ceramic capacitors. The MAX8940 requires only 1µF (typ) of output capacitance for stability with any load. When disabled, current consumption drops to below 1µA.
Package is a 5-pin SC70.
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Data Sheet
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Key Features
- Space-Saving SC70
- 25µVRMS Output Noise at 100Hz to 100kHz Bandwidth
- 65dB PSRR at 10kHz
- 120mV Dropout at 120mA Load
- Stable with 1µF Ceramic Capacitor for Any Load
- Guaranteed 120mA Output
- Output Voltages: 2.8V or 3V
- Low 40µA Ground Current
- Excellent Load/Line Transient
- Overcurrent and Thermal Protection
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Applications/Uses
- Base Stations
- Bluetooth Portable Radios and Accessories
- Cellular and Cordless Phones
- Digital Cameras
- PDA and Palmtop Computers
- Personal Stereos
- Portable and Battery-Powered Equipment
- Wireless LANs
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Key Specifications:
| Linear Regulators |
| Part Number |
Regulators |
VIN
(V) |
VIN
(V) |
Preset VOUT
(V) |
VDROPOUT @Rated ILOAD
(V) |
Rated ILOAD
(mA) |
ICC
(µA) |
Output Voltage Noise
(µV RMS) |
Ref. Bypass |
Low Batt./ Pwr. Fail Out |
Reverse Batt. Protect. |
Oper. Temp.
(°C) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| min |
max |
typ |
max |
typ |
max w/pins |
See Notes |
| MAX8940 |
1 |
2.8 |
6 |
|
0.12 |
120 |
90 |
13 |
Yes |
No |
No |
-40 to +85 |
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5.3 |
$0.37 @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
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX8940EXK28+T
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Active |
SC70;5 pin;5.3 mm²
Outline Drawing:21-0076 (PDF)
Land Pattern: 90-0188 (PDF)
Use pkgcode/variation: X5+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX8940EXK30+T
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Active |
SC70;5 pin;5.3 mm²
Outline Drawing:21-0076 (PDF)
Land Pattern: 90-0188 (PDF)
Use pkgcode/variation: X5+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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More Information
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Information Index
Document Ref.: 19-4662
Rev 0;
2009-07-16
This page last modified: 2009-07-16
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