LT1963A - 1.5A, Low Noise, Fast Transient Response LDO Regulators

Features

• Optimized for Fast Transient Response
• Output Current: 1.5A
• Dropout Voltage: 340mV
• Low Noise: 40µV_RMS (10Hz to 100kHz)
• 1mA Quiescent Current
• No Protection Diodes Needed
• Controlled Quiescent Current in Dropout
• Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V
• Adjustable Output from 1.21V to 20V
• <1µA Quiescent Current in Shutdown
• Stable with 10µF Output Capacitor
• Stable with Ceramic Capacitors
• Reverse Battery Protection
• No Reverse Current
• Thermal Limiting

Typical Application

Description

The LT1963A series are low dropout regulators optimized for fast transient response. The devices are capable of supplying 1.5A of output current with a dropout voltage of 340mV. Operating quiescent current is 1mA, dropping to <1µA in shutdown. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators. In addition to fast transient response, the LT1963A regulators have very low output noise which makes them ideal for sensitive RF supply applications.

Output voltage range is from 1.21V to 20V. The LT1963A regulators are stable with output capacitors as low as 10μF. Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting and reverse current protection. The devices are available in fixed output voltages of 1.5V, 1.8V, 2.5V, 3.3V and as an adjustable device with a 1.21V reference voltage. The LT1963A regulators are available in 5-lead TO-220, DD, 3-lead SOT-223, 8-lead SO and 16-lead TSSOP packages.

Packaging

TO-220, DDPAK, SOT-223, SO-8

Order Info

• Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
• Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
• Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number	Package	Pins	Temp	Price (1-99)	Price (1k)*	RoHS Data
LT1963AEFE	TSSOP	16	E	$3.57	$2.50	View
LT1963AEFE#PBF	TSSOP	16	E	$3.57	$2.50	View
LT1963AEFE#TR	TSSOP	16	E		$2.62	View
LT1963AEFE#TRPBF	TSSOP	16	E		$2.62	View
LT1963AEFE-1.5	TSSOP	16	E	$3.57	$2.50	View
LT1963AEFE-1.5#PBF	TSSOP	16	E	$3.57	$2.50	View
LT1963AEFE-1.5#TR	CERDIP	16	E		$2.62	View
LT1963AEFE-1.5#TRPBF	CERDIP	16	E		$2.62	View
LT1963AEFE-1.8	TSSOP	16	E	$3.57	$2.50	View
LT1963AEFE-1.8#PBF	TSSOP	16	E	$3.57	$2.50	View
LT1963AEFE-1.8#TR	TSSOP	16	E		$2.62	View
LT1963AEFE-1.8#TRPBF	TSSOP	16	E		$2.62	View
LT1963AEFE-2.5	TSSOP	16	E	$3.57	$2.50	View
LT1963AEFE-2.5#PBF	TSSOP	16	E	$3.57	$2.50	View
LT1963AEFE-2.5#TR	TSSOP	16	E		$2.62	View
LT1963AEFE-2.5#TRPBF	TSSOP	16	E		$2.62	View
LT1963AEFE-3.3	TSSOP	16	E	$3.57	$2.50	View
LT1963AEFE-3.3#PBF	TSSOP	16	E	$3.57	$2.50	View
LT1963AEFE-3.3#TR	TSSOP	16	E		$2.62	View
LT1963AEFE-3.3#TRPBF	TSSOP	16	E		$2.62	View
LT1963AEQ	DD PAK	5	E	$3.57	$2.50	View
LT1963AEQ#PBF	DD PAK	5	E	$3.57	$2.50	View
LT1963AEQ#TR	DD PAK	5	E		$2.62	View
LT1963AEQ#TRPBF	DD PAK	5	E		$2.62	View
LT1963AEQ-1.5	DD PAK	5	E	$3.57	$2.50	View
LT1963AEQ-1.5#PBF	DD PAK	5	E	$3.57	$2.50	View
LT1963AEQ-1.5#TR	DD PAK	5	E		$2.62	View
LT1963AEQ-1.5#TRPBF	DD PAK	5	E		$2.62	View
LT1963AEQ-1.8	DD PAK	5	E	$3.57	$2.50	View
LT1963AEQ-1.8#PBF	DD PAK	5	E	$3.57	$2.50	View
LT1963AEQ-1.8#TR	DD PAK	5	E		$2.62	View
LT1963AEQ-1.8#TRPBF	DD PAK	5	E		$2.62	View
LT1963AEQ-2.5	DD PAK	5	E	$3.57	$2.50	View
LT1963AEQ-2.5#PBF	DD PAK	5	E	$3.57	$2.50	View
LT1963AEQ-2.5#TR	DD PAK	5	E		$2.62	View
LT1963AEQ-2.5#TRPBF	DD PAK	5	E		$2.62	View
LT1963AEQ-3.3	DD PAK	5	E	$3.57	$2.50	View
LT1963AEQ-3.3#PBF	DD PAK	5	E	$3.57	$2.50	View
LT1963AEQ-3.3#TR	DD PAK	5	E		$2.62	View
LT1963AEQ-3.3#TRPBF	DD PAK	5	E		$2.62	View
LT1963AES8	SO	8	E	$2.60	$2.15	View
LT1963AES8#PBF	SO	8	E	$2.60	$2.15	View
LT1963AES8#TR	SO	8	E		$2.20	View
LT1963AES8#TRPBF	SO	8	E		$2.20	View
LT1963AES8-1.5	SO	8	E	$2.60	$2.15	View
LT1963AES8-1.5#PBF	SO	8	E	$2.60	$2.15	View
LT1963AES8-1.5#TR	SO	8	E		$2.20	View
LT1963AES8-1.5#TRPBF	SO	8	E		$2.20	View
LT1963AES8-1.8	SO	8	E	$2.60	$2.15	View
LT1963AES8-1.8#PBF	SO	8	E	$2.60	$2.15	View
LT1963AES8-1.8#TR	SO	8	E		$2.20	View
LT1963AES8-1.8#TRPBF	SO	8	E		$2.20	View
LT1963AES8-2.5	SO	8	E	$2.60	$2.15	View
LT1963AES8-2.5#PBF	SO	8	E	$2.60	$2.15	View
LT1963AES8-2.5#TR	SO	8	E		$2.20	View
LT1963AES8-2.5#TRPBF	SO	8	E		$2.20	View
LT1963AES8-3.3	SO	8	E	$2.60	$2.15	View
LT1963AES8-3.3#PBF	SO	8	E	$2.60	$2.15	View
LT1963AES8-3.3#TR	SO	8	E		$2.20	View
LT1963AES8-3.3#TRPBF	SO	8	E		$2.20	View
LT1963AEST-1.5	SOT	3	E	$2.60	$2.15	View
LT1963AEST-1.5#PBF	SOT	3	E	$2.60	$2.15	View
LT1963AEST-1.5#TR	SOT	3	E		$2.20	View
LT1963AEST-1.5#TRPBF	SOT	3	E		$2.20	View
LT1963AEST-1.8	SOT	3	E	$2.60	$2.15	View
LT1963AEST-1.8#PBF	SOT	3	E	$2.60	$2.15	View
LT1963AEST-1.8#TR	SOT	3	E		$2.20	View
LT1963AEST-1.8#TRPBF	SOT	3	E		$2.20	View
LT1963AEST-2.5	SOT	3	E	$2.60	$2.15	View
LT1963AEST-2.5#PBF	SOT	3	E	$2.60	$2.15	View
LT1963AEST-2.5#TR	SOT	3	E		$2.20	View
LT1963AEST-2.5#TRPBF	SOT	3	E		$2.20	View
LT1963AEST-3.3	SOT	3	E	$2.60	$2.15	View
LT1963AEST-3.3#PBF	SOT	3	E	$2.60	$2.15	View
LT1963AEST-3.3#TR	SOT	3	E		$2.20	View
LT1963AEST-3.3#TRPBF	SOT	3	E		$2.20	View
LT1963AET	TO-220	5	E	$3.57	$2.50	View
LT1963AET#06PBF	TO-220	5	E	$3.57	$2.50	View
LT1963AET#PBF	TO-220	5	E	$3.57	$2.50	View
LT1963AET-1.5	TO-220	5	E	$3.57	$2.50	View
LT1963AET-1.5#06PBF	TO-220	5	E	$3.57	$2.50	View
LT1963AET-1.5#PBF	TO-220	5	E	$3.57	$2.50	View
LT1963AET-1.8	TO-220	5	E	$3.57	$2.50	View
LT1963AET-1.8#06PBF	TO-220	5	E	$3.57	$2.50	View
LT1963AET-1.8#30	TO-220	5	E	$4.02	$2.95	View
LT1963AET-1.8#30PBF	TO-220	5	E	$4.02	$2.95	View
LT1963AET-1.8#PBF	TO-220	5	E	$3.57	$2.50	View
LT1963AET-2.5	TO-220	5	E	$3.57	$2.50	View
LT1963AET-2.5#30	TO-220	5	E	$4.02	$2.95	View
LT1963AET-2.5#30PBF	TO-220	5	E	$4.02	$2.95	View
LT1963AET-2.5#PBF	TO-220	5	E	$3.57	$2.50	View
LT1963AET-3.3	TO-220	5	E	$3.57	$2.50	View
LT1963AET-3.3#30	TO-220	5	E	$4.02	$2.95	View
LT1963AET-3.3#30PBF	TO-220	5	E	$4.02	$2.95	View
LT1963AET-3.3#PBF	TO-220	5	E	$3.57	$2.50	View
LT1963AIFE#PBF	TSSOP	16	I	$3.97	$2.78	View
LT1963AIFE#TRPBF	TSSOP	16	I		$2.84	View
LT1963AIQ#PBF	DD PAK	5	I	$3.97	$2.78	View
LT1963AIQ#TRPBF	DD PAK	5	I		$2.90	View
LT1963AIS8#PBF	SO	8	I	$3.43	$2.40	View
LT1963AIS8#TRPBF	SO	8	I		$2.46	View
LT1963AIT#PBF	TO-220	5	I	$3.97	$2.78	View
LT1963AMPQ	DD PAK	5	MP	$9.64	$6.75	View
LT1963AMPQ#PBF	DD PAK	5	MP	$9.64	$6.75	View
LT1963AMPQ#TR	DD PAK	5	MP		$6.85	View
LT1963AMPS8#PBF	SO	8	MP	$8.29	$5.80	View
LT1963AMPS8#TR	SO	8	MP		$5.86	View
LT1963EFE	TSSOP	16	E	$3.57	$2.50	View
LT1963EFE#PBF	TSSOP	16	E	$3.57	$2.50	View
LT1963EFE#TR	TSSOP	16	E		$2.62	View
LT1963EFE#TRPBF	TSSOP	16	E		$2.62	View
LT1963EFE-1.5	TSSOP	16	E	$3.57	$2.50	View
LT1963EFE-1.5#PBF	TSSOP	16	E	$3.57	$2.50	View
LT1963EFE-1.5#TR	TSSOP	16	E		$2.62	View
LT1963EFE-1.5#TRPBF	TSSOP	16	E		$2.62	View
LT1963EFE-1.8	TSSOP	16	E	$3.57	$2.50	View
LT1963EFE-1.8#PBF	TSSOP	16	E	$3.57	$2.50	View
LT1963EFE-1.8#TR	TSSOP	16	E		$2.62	View
LT1963EFE-1.8#TRPBF	TSSOP	16	E		$2.62	View
LT1963EFE-2.5	TSSOP	16	E	$3.57	$2.50	View
LT1963EFE-2.5#PBF	TSSOP	16	E	$3.57	$2.50	View
LT1963EFE-2.5#TR	TSSOP	16	E		$2.62	View
LT1963EFE-2.5#TRPBF	TSSOP	16	E		$2.62	View
LT1963EFE-3.3	TSSOP	16	E	$3.57	$2.50	View
LT1963EFE-3.3#PBF	TSSOP	16	E	$3.57	$2.50	View
LT1963EFE-3.3#TR	TSSOP	16	E		$2.62	View
LT1963EFE-3.3#TRPBF	TSSOP	16	E		$2.62	View
LT1963EQ	DD PAK	5	E	$3.57	$2.50	View
LT1963EQ#PBF	DD PAK	5	E	$3.57	$2.50	View
LT1963EQ#TR	DD PAK	5	E		$2.62	View
LT1963EQ#TRPBF	DD PAK	5	E		$2.62	View
LT1963EQ-1.5	DD PAK	5	E	$3.57	$2.50	View
LT1963EQ-1.5#PBF	DD PAK	5	E	$3.57	$2.50	View
LT1963EQ-1.5#TR	DD PAK	5	E		$2.62	View
LT1963EQ-1.5#TRPBF	DD PAK	5	E		$2.62	View
LT1963EQ-1.8	DD PAK	5	E	$3.57	$2.50	View
LT1963EQ-1.8#PBF	DD PAK	5	E	$3.57	$2.50	View
LT1963EQ-1.8#TR	DD PAK	5	E		$2.62	View
LT1963EQ-1.8#TRPBF	DD PAK	5	E		$2.62	View
LT1963EQ-2.5	DD PAK	5	E	$3.57	$2.50	View
LT1963EQ-2.5#PBF	DD PAK	5	E	$3.57	$2.50	View
LT1963EQ-2.5#TR	DD PAK	5	E		$2.62	View
LT1963EQ-2.5#TRPBF	DD PAK	5	E		$2.62	View
LT1963EQ-3.3	DD PAK	5	E	$3.57	$2.50	View
LT1963EQ-3.3#PBF	DD PAK	5	E	$3.57	$2.50	View
LT1963EQ-3.3#TR	DD PAK	5	E		$2.62	View
LT1963EQ-3.3#TRPBF	DD PAK	5	E		$2.62	View
LT1963ES8	SO	8	E	$2.60	$2.15	View
LT1963ES8#PBF	SO	8	E	$2.60	$2.15	View
LT1963ES8#TR	SO	8	E		$2.20	View
LT1963ES8#TRPBF	SO	8	E		$2.20	View
LT1963ES8-1.5	SO	8	E	$2.60	$2.15	View
LT1963ES8-1.5#PBF	SO	8	E	$2.60	$2.15	View
LT1963ES8-1.5#TR	SO	8	E		$2.20	View
LT1963ES8-1.5#TRPBF	SO	8	E		$2.20	View
LT1963ES8-1.8	SO	8	E	$2.60	$2.15	View
LT1963ES8-1.8#PBF	SO	8	E	$2.60	$2.15	View
LT1963ES8-1.8#TR	SO	8	E		$2.20	View
LT1963ES8-1.8#TRPBF	SO	8	E		$2.20	View
LT1963ES8-2.5	SO	8	E	$2.60	$2.15	View
LT1963ES8-2.5#PBF	SO	8	E	$2.60	$2.15	View
LT1963ES8-2.5#TR	SO	8	E		$2.20	View
LT1963ES8-2.5#TRPBF	SO	8	E		$2.20	View
LT1963ES8-3.3	SO	8	E	$2.60	$2.15	View
LT1963ES8-3.3#PBF	SO	8	E	$2.60	$2.15	View
LT1963ES8-3.3#TR	SO	8	E		$2.20	View
LT1963ES8-3.3#TRPBF	SO	8	E		$2.20	View
LT1963EST-1.5	SOT	3	E	$2.60	$2.15	View
LT1963EST-1.5#PBF	SOT	3	E	$2.60	$2.15	View
LT1963EST-1.5#TR	SOT	3	E		$2.20	View
LT1963EST-1.5#TRPBF	SOT	3	E		$2.20	View
LT1963EST-1.8	SOT	3	E	$2.60	$2.15	View
LT1963EST-1.8#PBF	SOT	3	E	$2.60	$2.15	View
LT1963EST-1.8#TR	SOT	3	E		$2.20	View
LT1963EST-1.8#TRPBF	SOT	3	E		$2.20	View
LT1963EST-2.5	SOT	3	E	$2.60	$2.15	View
LT1963EST-2.5#PBF	SOT	3	E	$2.60	$2.15	View
LT1963EST-2.5#TR	SOT	3	E		$2.20	View
LT1963EST-2.5#TRPBF	SOT	3	E		$2.20	View
LT1963EST-3.3	SOT	3	E	$2.60	$2.15	View
LT1963EST-3.3#PBF	SOT	3	E	$2.60	$2.15	View
LT1963EST-3.3#TR	SOT	3	E		$2.20	View
LT1963EST-3.3#TRPBF	SOT	3	E		$2.20	View
LT1963ET	TO-220	5	E	$3.00	$2.50	View
LT1963ET#PBF	TO-220	5	E	$3.00	$2.50	View
LT1963ET-1.5	TO-220	5	E	$3.00	$2.50	View
LT1963ET-1.5#PBF	TO-220	5	E	$3.00	$2.50	View
LT1963ET-1.8	TO-220	5	E	$3.00	$2.50	View
LT1963ET-1.8#PBF	TO-220	5	E	$3.00	$2.50	View
LT1963ET-2.5	TO-220	5	E	$3.00	$2.50	View
LT1963ET-2.5#PBF	TO-220	5	E	$3.00	$2.50	View
LT1963ET-3.3	TO-220	5	E	$3.00	$2.50	View
LT1963ET-3.3#PBF	TO-220	5	E	$3.00	$2.50	View
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^* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Applications

• 3.3V to 2.5V Logic Power Supplies
• Post Regulator for Switching Supplies

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