TPS732 Cap-Free, NMOS, 250mA Low Dropout Regulator with Reverse Current Protection

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TLV758P - 500-mA LDO regulator with lower IQ

Description

The TPS732 family of low-dropout (LDO) voltage regulators uses an NMOS pass element in a voltage-follower configuration. This topology is stable using output capacitors with low equivalent series resistance (ESR), and even allows operation without a capacitor. The device also provides high reverse blockage (low reverse current) and ground pin current that is nearly constant over all values of output current.

The TPS732 uses an advanced BiCMOS process to yield high precision while delivering very low dropout voltages and low ground pin current. Current consumption, when not enabled, is less than 1 µA and ideal for portable applications. The extremely low output noise (30 µV_RMS with 0.1-µF C_NR) is ideal for powering VCOs. These devices are protected by thermal shutdown and foldback current limit.

Features

Stable with No Output Capacitor or Any Value or
Type of Capacitor
Input Voltage Range: 1.7 V to 5.5 V
Ultralow Dropout Voltage: 40 mV Typical at
250 mA
Excellent Load Transient Response–With or
Without Optional Output Capacitor
NMOS Topology Provides Low Reverse Leakage
Current
Low Noise: 30 µV_RMS Typical (10 kHz to 100 kHz)
0.5% Initial Accuracy
1% Overall Accuracy (Line, Load, and
Temperature)
Less Than 1-µA Maximum I_Q in Shutdown Mode
Thermal Shutdown and Specified Min and Max
Current Limit Protection
Available in Multiple Output Voltage Versions
- Fixed Outputs of 1.2 V to 5 V
- Adjustable Outputs from 1.2 V to 5.5 V
- Custom Outputs Available
APPLICATIONS
- Portable and Battery-Powered Equipment
- Post-Regulation for Switching Supplies
- Noise-Sensitive Circuitry such as VCOs
- Point-of-Load Regulation for DSPs, FPGAs,
  ASICs, and Microprocessors

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Thermal calculator

Estimate the LDO IC temperature at your design conditions:

Part number
		Range
Vin	V
Vout	V
Iout	A
Ambient temp	°C
Package option
Voltage option
PCB construction			Enhanced Thermal = single thermal spreading plane of 1 oz Cu Minimum Thermal = single thermal spreading plane of 1/2 oz Cu View the user guide for more details.
Error: LDO may be in dropout for the given conditions. Try increasing Vin, lowering Vout or lowering Iout.

Junction temperature vs. PCB copper coverage area

This calculator uses the PCB copper area to estimate the device junction temperature. See notes on usage and calculation method.

Parametrics

Compare all products in Linear regulators (LDO)

Download to Excel

Part number	Order	Output options	Iout (Max) (A)	Vin (Max) (V)	Vin (Min) (V)	Vout (Max) (V)	Vout (Min) (V)	Fixed output options (V)	Package Group	Features	Regulated outputs (#)	Operating temperature range (C)	Thermal resistance θJA (°C/W)	Noise (uVrms)	Approx. price (US$)	Rating	PSRR @ 100 KHz (dB)	Accuracy (%)	Dropout voltage (Vdo) (Typ) (mV)	Iq (Typ) (mA)	Package size: mm2:W x L (PKG)
TPS732	Order now	Adjustable Output Fixed Output	0.25	5.5	1.7	5.5	1.2	1.3 1.5 1.6 1.8 1.9 2.5 3 3.3 5	SON \| 8 SOT-223 \| 6 SOT-23 \| 5	Enable Foldback Overcurrent Protection Reverse Current Protection	1	-40 to 125	53	30	0.51 \| 1ku	Catalog	32	1	40	0.4	8SON: 9 mm2: 3 x 3 (SON \| 8) 6SOT-223: 46 mm2: 7.06 x 6.5 (SOT-223 \| 6) 5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 \| 5)
TPS731	Order now	Adjustable Output Fixed Output	0.15	5.5	1.7	5.5	1.2	1.25 1.5 1.8 2.5 3 3.1 3.2 3.3 5	SOT-23 \| 5	Enable Foldback Overcurrent Protection Reverse Current Protection	1	-40 to 125	207	30	0.38 \| 1ku	Catalog	32	1	30	0.4	5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 \| 5)
TPS736	Order now	Adjustable Output Fixed Output	0.4	5.5	1.7	5.4	1.2	1.25 1.5 1.6 1.8 1.9 2.5 3 3.2 3.3 4.3	SON \| 8 SOT-223 \| 6 SOT-23 \| 5	Enable Foldback Overcurrent Protection Reverse Current Protection	1	-40 to 125	53	30	0.75 \| 1ku	Catalog	32	1	75	0.4	8SON: 9 mm2: 3 x 3 (SON \| 8) 6SOT-223: 46 mm2: 7.06 x 6.5 (SOT-223 \| 6) 5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 \| 5)

TPS732 ACTIVE This product has been released to the market and is available for purchase. For some products, newer alternatives may be available. Cap-Free, NMOS, 250mA Low Dropout Regulator with Reverse Current Protection