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MAX38904A

1.7V–5.5V_IN, 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 5.1µV_RMS of Output Noise

Data Sheet

Please check latest availability status for a specific part variant.

Overview

Description

The MAX38904 is a 1.7V–5.5V V_IN, low-noise linear regulator that delivers up to 2A of output current with only 5.1µV_RMS 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 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.

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
- 5.1μV_RMS Output Noise, 10Hz to 100kHz
- 1.3mA Quiescent Supply Current
- > 70dB PSRR at 10kHz
Enables Ease-of-Use and Robust Protection
- 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

Parametric Specs

Part Number

Regulators

V_IN
(V)

Preset V_OUT
(V)

Adj. V_OUT
(V)

V_DROPOUT @Rated I_LOAD
(V)

Rated I_LOAD
(mA)

Ref. Bypass

Low Batt./ Pwr. Fail Out

POK/Reset Thresh.
(V)

Watchdog

Reverse Batt. Protect.

Oper. Temp.
(°C)

Package/Pins

Budgetary
Price

min

max

min

max

typ

nom

See Notes

MAX38904A NEW!

1.7

5.5

1.2V to 5.0V

0.6

0.05

2000

Yes

Vout-9%

-40 to +125

See Data Sheet

MAX38904B NEW!

TDFN/14

$0.97 @1k

MAX38904C NEW!

See Data Sheet

MAX38904D NEW!

See Data Sheet

See All Linear Regulators (149)

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 and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Design Resources

Quality and Environmental Data

Request Reliability Report for: MAX38904A
Lead-Free Package Tin (Sn) Whisker Reports

Quality And Environmental

Device	Fab Process	Technology	Sample size	Rejects	FIT at 25°C	FIT at 55°C

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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