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REG102NA-3.3/250

250-mA, 10-V, low-dropout voltage regulator with enable

Manufacturer:

Texas Instruments
Mfr.Part #:

REG102NA-3.3/250
Datasheet:

REG102NA-3.3/250 Datasheet (PDF)
Mounting Style:

SMD/SMT
Output Voltage:

3.3 V
Output Current:

250 mA
Number of Outputs:

1 Output
EDA/CAD Models:

Request Free CAD Models for REG102NA-3.3/250

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REG102NA-3.3/250 General Description

The REG102 is a family of low-noise, low-dropout linear regulators with low ground pin current. Its new DMOS topology provides significant improvement over previous designs, including low-dropout voltage (only 150mV typ at full load), and better transient performance. In addition, no output capacitor is required for stability, unlike conventional low-dropout regulators that are difficult to compensate and require expensive low ESR capacitors greater than 1µF.

Typical ground pin current is only 600µA (at I_OUT = 250mA) and drops to 10nA when not enabled. Unlike regulators with PNP pass devices, quiescent current remains relatively constant over load variations and under dropout conditions.

The REG102 has very low output noise (typically 28µVrms for V_OUT = 3.3V with C_NR = 0.01µF), making it ideal for use in portable communications equipment. On-chip trimming results in high output voltage accuracy. Accuracy is maintained over temperature, line, and load variations. Key parameters are tested over the specified temperature range (40°C to +85°C).

The REG102 is well protectedinternal circuitry provides a current limit that protects the load from damage; furthermore, thermal protection circuitry keeps the chip from being damaged by excessive temperature. The REG102 is available in the SOT23-5, SOT223-5, and SO-8 packages.

Key Features

NEW DMOS TOPOLOGY:
Ultra Low Dropout Voltage:
150mV typ at 250mA
Output capacitor not Required for Stability
FAST TRANSIENT RESPONSE
VERY LOW NOISE: 28 µVrms
HIGH ACCURACY: ±1.5% max
HIGH EFFICIENCY:
I_GND = 600 µA at I_OUT = 250mA
Not Enabled: I_GND = 0.01 µA
2.5V, 2.8V, 2.85V, 3.0V, 3.3V, 5.0V AND ADJUSTABLE OUTPUT VERSIONS
OTHER OUTPUT VOLTAGES AVAILABLE UPON REQUEST
FOLDBACK CURRENT LIMIT
THERMAL PROTECTION
SMALL SURFACE-MOUNT PACKAGES:
SOT23-5, SOT223-5, and SO-8
APPLICATIONS
- PORTABLE COMMUNICATION DEVICES
- BATTERY-POWERED EQUIPMENT
- PERSONAL DIGITAL ASSISTANTS
- MODEMS
- BAR-CODE SCANNERS
- BACKUP POWER SUPPLIES

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Specifications

Product Category	LDO Voltage Regulators	Mounting Style	SMD/SMT
Output Voltage	3.3 V	Output Current	250 mA
Number of Outputs	1 Output	Polarity	Positive
Quiescent Current	600 uA	Input Voltage, Min	1.8 V
Input Voltage, Max	10 V	Output Type	Fixed
Minimum Operating Temperature	- 40 C	Maximum Operating Temperature	+ 85 C
Dropout Voltage	150 mV	Series	REG102-33
Dropout Voltage - Max	10 mV	Height	1.15 mm
Ib - Input Bias Current	400 uA	Length	2.9 mm
Operating Supply Current	400 uA	Product	LDO Voltage Regulators
Product Type	LDO Voltage Regulators	Reference Voltage	1.26 V
Factory Pack Quantity	250	Subcategory	PMIC - Power Management ICs
Type	Low Dropout Regulators	Voltage Regulation Accuracy	1.5 %
Width	1.6 mm	Unit Weight	0.000222 oz