MAX38903B
1.7V–5.5VIN, 1A Low Noise LDO Linear Regulators in TDFN and WLP
The MAX38903A/B/C/D are a Low-Noise Linear Regulators that Delivers up to 1A of Out-Put Current with Only 7uVRMS
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The MAX38903A/B/C/D are a family of low-noise linear regulators that deliver up to 1A of output current with only 7µVRMS of output noise from 10Hz to 100kHz.
These regulators maintain ±1% output accuracy over a wide input voltage range, requiring only 100mV of input-to-output headroom at full load. The 1200µA no-load supply current is independent of dropout voltage.
The MAX38903A 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 MAX38903B/C output voltage can be adjusted to a value in the range of 0.6V to 5.0V using two external resistors.
The MAX38903B also includes an active-high POK signal for trouble-free load startup.The MAX38903D has factory-preset output voltages over the range of 0.7V to 5V in 50mV steps. All versions include a programmable output soft-start rate, output over-current and thermal overload protection.
The MAX38903A/B are offered in a 10-pin, 3mm x 3mm TDFN package, while the MAX38903C/D are offered in a 9-bump, 0.4mm pitch, 1.4mm x 1.4mm wafer-level package (WLP).
Key Features
- Delivers Flexible Operating Range
- 1.7V to 5.5V Input Voltage Range
- 0.6V to 5.0V Programmable Output Voltage
- 1A Maximum Output Current
- 100mV Maximum Dropout at 1A Load
- < 1µA Shutdown Supply Current
- Reduces Noise and Improves Accuracy
- ±1% DC Accuracy Over Load, Line, and Temperature
- 7µVRMS Output Noise, 10Hz to 100kHz
- 1200µA Operating Supply Current
- 70dB PSRR at 10kHz
- Enables Ease-of-Use and Robust Protection
- Stable with 4µF(min) Output Capacitance
- Programmable Soft-Start Rate
- Overcurrent and Overtemperature Protection
- Output-to-Input Reverse Current Protection
- Power-OK Output
- Reduces Size, Improves Reliability
- 3mm x 3mm, 10-pin TDFN Package and 1.4mm x 1.4mm, 3 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
| VIN (V) (min) | 1.7 |
| VIN (V) (max) | 5.5 |
| Adj. VOUT (V) (min) | 0.6 |
| Adj. VOUT (V) (max) | 5.3 |
| Rated ILOAD (mA) | 1000 |
| Preset VOUT (V) | - |
| # Regulators | 1 |
| VDROPOUT @Rated ILOAD (V) (typ) | 0.05 |
| ICC (µA) (max) | 600 |
| Output Voltage Noise (µV RMS) (typ) | 12 |
| 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/10 |
| Budgetary Price (See Notes) | $1.20 @1k |
Technical Docs
| Data Sheet | 1.7V–5.5VIN, 1A Low Noise LDO Linear Regulators in TDFN and WLP | Dec 09, 2020 |
Click any title below to view the detail page where available.
Description
The MAX38903 TDFN evaluation kit (EV kit) evaluates the MAX38903A/MAX38903B IC family of low noise linear regulators. The EV kit operates over an input range of 1.7V to 5.5V and provides any output voltage range from 0.6V to 5.3V, and delivers up to 1A of current. The EV kit comes with the MAX38903BATB+ installed.
View DetailsFeatures
- Evaluates the MAX38903A/MAX38903B IC in a 10-pin (3mm x 3mm) TDFN
- 1.7V to 5.5V Input Range
- 0.6V to 5.3V Resistor Configurable Output Voltage (MAX38903B, On Board with Output Set to 3.3V)
- 1.2V to 5.0V Jumper Configurable Output Voltage (MAX38903A, with IC Replacement)
- Up to 1A Output Current
- Proven 2-Layer 1 oz Copper PCB Layout
- Demonstrates Compact Solution Size
- Fully Assembled and Tested
Description
The MAX38903 wafer-level package (WLP) evaluation kit (EV kit) evaluates the MAX38903C/MAX38903D IC family of low noise linear regulators. The EV kit operates over an input range of 1.7V to 5.5V, provides an output voltage range from 0.6V to 5.0V, and delivers up to 1A of current. The EV kit comes with the MAX38903CANL+ installed.
View DetailsFeatures
- Evaluates the MAX38903C/MAX38903D IC in a 9-ball (1.4mm x 1.4mm) WLP
- 1.7V to 5.5V Input Range
- 0.6V to 5.0V Resistor Configurable Output Voltage (MAX38903C, Onboard with Output Set to 3.3V)
- 1.2V to 5.0V Factory-Preset Output Voltage (MAX38903D, with IC Replacement)
- Up to 1A Output Current
- Proven 2-Layer 1-oz Copper PCB Layout
- Demonstrates Compact Solution Size
- Fully Assembled and Tested
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
Parameters
| VIN (V) (min) | 1.7 |
| VIN (V) (max) | 5.5 |
| Adj. VOUT (V) (min) | 0.6 |
| Adj. VOUT (V) (max) | 5.3 |
| Rated ILOAD (mA) | 1000 |
| Preset VOUT (V) | - |
| # Regulators | 1 |
| VDROPOUT @Rated ILOAD (V) (typ) | 0.05 |
| ICC (µA) (max) | 600 |
| Output Voltage Noise (µV RMS) (typ) | 12 |
| 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/10 |
| Budgetary Price (See Notes) | $1.20 @1k |
Key Features
- Delivers Flexible Operating Range
- 1.7V to 5.5V Input Voltage Range
- 0.6V to 5.0V Programmable Output Voltage
- 1A Maximum Output Current
- 100mV Maximum Dropout at 1A Load
- < 1µA Shutdown Supply Current
- Reduces Noise and Improves Accuracy
- ±1% DC Accuracy Over Load, Line, and Temperature
- 7µVRMS Output Noise, 10Hz to 100kHz
- 1200µA Operating Supply Current
- 70dB PSRR at 10kHz
- Enables Ease-of-Use and Robust Protection
- Stable with 4µF(min) Output Capacitance
- Programmable Soft-Start Rate
- Overcurrent and Overtemperature Protection
- Output-to-Input Reverse Current Protection
- Power-OK Output
- Reduces Size, Improves Reliability
- 3mm x 3mm, 10-pin TDFN Package and 1.4mm x 1.4mm, 3 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 MAX38903A/B/C/D are a family of low-noise linear regulators that deliver up to 1A of output current with only 7µVRMS of output noise from 10Hz to 100kHz.
These regulators maintain ±1% output accuracy over a wide input voltage range, requiring only 100mV of input-to-output headroom at full load. The 1200µA no-load supply current is independent of dropout voltage.
The MAX38903A 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 MAX38903B/C output voltage can be adjusted to a value in the range of 0.6V to 5.0V using two external resistors.
The MAX38903B also includes an active-high POK signal for trouble-free load startup.The MAX38903D has factory-preset output voltages over the range of 0.7V to 5V in 50mV steps. All versions include a programmable output soft-start rate, output over-current and thermal overload protection.
The MAX38903A/B are offered in a 10-pin, 3mm x 3mm TDFN package, while the MAX38903C/D are offered in a 9-bump, 0.4mm pitch, 1.4mm x 1.4mm wafer-level package (WLP).
Technical Docs
| Data Sheet | 1.7V–5.5VIN, 1A Low Noise LDO Linear Regulators in TDFN and WLP | Dec 09, 2020 |
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
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