MAX38904A
1.7V to 5.5VIN, 2A Low-Noise LDO Linear Regulators in TDFN and WLP
The MAX38904 is a Low-Noise Linear Regulator that Delivers up to 2A of Output Current with only 5.1µVRMS of Output Noise
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Key Features
Applications/Uses
| VIN (V) (min) | 1.7 |
| VIN (V) (max) | 5.5 |
| Adj. VOUT (V) (min) | 0.6 |
| Adj. VOUT (V) (max) | 5 |
| Rated ILOAD (mA) | 2000 |
| Preset VOUT (V) | 1.2V to 5.0V |
| # Regulators | 1 |
| VDROPOUT @Rated ILOAD (V) (typ) | 0.05 |
| Ref. Bypass | Yes |
| Low Batt./ Pwr. Fail Out | No |
| POK/Reset Thresh. (V) (nom) | Vout-9% |
| Watchdog | No |
| Reverse Batt. Protect. | No |
| Oper. Temp. (°C) | -40 to +125 |
| Package/Pins | TDFN-CU/14 |
| Budgetary Price (See Notes) | 1.44 |
Simplified Block Diagram
Technical Docs
| Data Sheet | 1.7V to 5.5VIN, 2A Low-Noise LDO Linear Regulators in TDFN and WLP | Jul 05, 2022 |
Support & Training
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Sampling:
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Parameters
| VIN (V) (min) | 1.7 |
| VIN (V) (max) | 5.5 |
| Adj. VOUT (V) (min) | 0.6 |
| Adj. VOUT (V) (max) | 5 |
| Rated ILOAD (mA) | 2000 |
| Preset VOUT (V) | 1.2V to 5.0V |
| # Regulators | 1 |
| VDROPOUT @Rated ILOAD (V) (typ) | 0.05 |
| Ref. Bypass | Yes |
| Low Batt./ Pwr. Fail Out | No |
| POK/Reset Thresh. (V) (nom) | Vout-9% |
| Watchdog | No |
| Reverse Batt. Protect. | No |
| Oper. Temp. (°C) | -40 to +125 |
| Package/Pins | TDFN-CU/14 |
| Budgetary Price (See Notes) | 1.44 |
Key Features
- Delivers Flexible Operating Range
- 1.7V to 5.5V Input Voltage Range
- 0.6V to 5.0V Programmable Output Voltage
- 2A Maximum Output Current
- 100mV Maximum Dropout at 2A Load
- < 1.5µA Shutdown Supply Current
- Reduces Noise and Improves Accuracy
- ±1% DC Accuracy Over Load, Line, and Temperature
- 5.1μVRMS Output Noise, 10Hz to 100kHz
- 1.3mA Quiescent Supply Current
- > 70dB PSRR at 10kHz
- Enables Ease-of-Use and Robust Protection
- Active Discharge of 70Ω at OUT
- Stable with 8µF (Min) Output Capacitance
- Programmable Soft-Start Rate
- Overcurrent and Overtemperature Protection
- Output-to-Input Reverse Current Protection
- Power-OK Status Pin
- Reduces Size, Improves Reliability
- 3mm x 3mm 14-pin TDFN Package and 2.2mm x 1.37mm, 5 x 3 Bump, 0.4mm Pitch WLP
- -40°C to 125°C Operating Temperature
Applications/Uses
- Communication Systems, Test Equipment, Medical Equipment
- High-End Audio Systems
- High-Resolution Data Acquisition Systems
Description
The MAX38904 is a 1.7V–5.5V VIN, low-noise linear regulator that delivers up to 2A of output current with only 5.1µVRMS of output noise from 10Hz to 100kHz. The regulator maintains ±1% output accuracy over a wide input voltage range, requiring only 100mV of input-to-output headroom at full load. The 1.3mA no-load supply current is independent of dropout voltage. The MAX38904A/B/C/D have a 70Ω active discharge feature to quickly discharge output capacitors.
The output voltage on MAX38904B can be adjusted to a value in the range of 0.6V to 5.0V by using two external resistors. The MAX38904B also includes an active-high POK signal for trouble-free load startup.
The MAX38904A has nine pin-selectable output voltages 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, and 5V.
The wafer-level package (WLP) versions of the MAX38904 are available as C and D variants. The MAX38904C uses external feedback resistors for adjusting the output voltage, while the MAX38904D has factory preset output voltages over the range of 0.7V to 5.0V in 50mV steps.
All versions include a programmable output soft-start rate, output overcurrent, and thermal overload protection.
The MAX38904A/B are offered in a 3mm x 3mm, 14-pin TDFN package, while the MAX38904C/D are available in 5 x 3 bump, 2.2mm x 1.37mm WLP, 0.4mm pitch.
Simplified Block Diagram
Technical Docs
| Data Sheet | 1.7V to 5.5VIN, 2A Low-Noise LDO Linear Regulators in TDFN and WLP | Jul 05, 2022 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
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