TPS736 Single Output LDO, 400mA, Adj.(1.2 to 5.5V), Cap free, Low Noise, Reverse Current Protection

Recommended alternative parts

TLV758P - 500-mA LDO regulator with lower IQ
TPS7A90 - 500-mA, low-noise (4.7-µVrms) LDO regulator in a small package (2.5 mm by 2.5 mm)
TPS745 - 500-mA adjustable output LDO regulator with power good and lower dropout

Description

The TPS736xx family of low-dropout (LDO) linear voltage regulators uses a new topology: an NMOS pass element in a voltage-follower configuration. This topology is stable using output capacitors with low ESR, and even allows operation without a capacitor. It also provides high reverse blockage (low reverse current) and ground pin current that is nearly constant over all values of output current.

The TPS736xx 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 under 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 of 1.7 V to 5.5 V
Ultra-Low Dropout Voltage: 75 mV typ
Excellent Load Transient Response–with or
without Optional Output Capacitor
New NMOS Topology Delivers Low Reverse Leakage
Current
Low Noise: 30 µV_RMS typ
(10 Hz to 100 kHz)
0.5% Initial Accuracy
1% Overall Accuracy Over Line, Load, and
Temperature
Less Than 1 µA max I_Q in Shutdown
Mode
Thermal Shutdown and Specified Min/Max Current
Limit Protection
Available in Multiple Output Voltage Versions
- Fixed Outputs of 1.20 V to 5.0 V
- Adjustable Output from 1.20 V to 5.5 V
- Custom Outputs Available
APPLICATIONS
- Portable/Battery-Powered Equipment
- Post-Regulation for Switching Supplies
- Noise-Sensitive Circuitry such as VCOs
- Point of Load Regulation for DSPs, FPGAs,
  ASICs, and Microprocessors

C2000 Is a trademark of Texas Instruments
All other trademarks are the property of their respective owners

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)

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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)
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)
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)
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)

TPS736 ACTIVE This product has been released to the market and is available for purchase. For some products, newer alternatives may be available. Single Output LDO, 400mA, Adj.(1.2 to 5.5V), Cap free, Low Noise, Reverse Current Protection