LM1117

LM1117 800-mA, Low-Dropout Linear Regulator

Manufacturer

Overview

Part: LM1117 from Texas Instruments

Type: Low-Dropout Linear Regulator

Key Specs:

Output current: 800 mA
Dropout voltage: 1.2 V at 800 mA load current
Line regulation: 0.2% (maximum)
Load regulation: 0.4% (maximum)
Fixed output voltages: 1.8 V, 2.5 V, 3.3 V, 5 V
Adjustable output voltage range: 1.25 V to 13.8 V
Output voltage accuracy: ±1%
Operating temperature range (LM1117): 0°C to +125°C
Operating temperature range (LM1117I): –40°C to +125°C

Features:

Available in 1.8 V, 2.5 V, 3.3 V, 5 V, and adjustable versions
Space-saving SOT-223 and WSON packages
Current limiting and thermal protection
Zener trimmed bandgap reference
Requires minimum 10-µF tantalum capacitor at the output

Applications:

AC drive power stage modules
Merchant network and server PSU
Industrial AC/DC
Ultrasound scanners
Servo drive control modules

Package:

DCY (SOT-223, 4): 6.50 mm × 3.50 mm
NDE (TO-220, 3): 14.986 mm × 10.16 mm
NDP (TO-252, 3): 6.58 mm × 6.10 mm
NGN (WSON, 8): 4.00 mm × 4.00 mm
KTT (TO-263, 3): 10.18 mm × 8.41 mm

Features

For a newer drop-in alternative, see the TLV1117
For drop-in replacements in fixed output SOT-223 package configuration and improved functionality, see the TLV761
Available in 1.8 V, 2.5 V, 3.3 V, 5 V, and adjustable versions
Space-saving SOT-223 and WSON packages
Current limiting and thermal protection
Output current: 800 mA
Line regulation: 0.2% (maximum)
Load regulation: 0.4% (maximum)
Temperature range:
- LM1117: 0°C to +125°C
- LM1117I: –40°C to +125°C

Applications

Pin Configuration

Figure 6-1. DCY Package, 4-Pin SOT (Top View)

Figure 6-2. NDE Package, 3-Pin TO-220 (Top View)

Figure 6-3. KTT Package, 3-Pin TO-263 (Top View)

Figure 6-4. NDP Package, 3-Pin TO-252 (Top View)

When using the WSON package pins 2, 3, and 4 must be connected together and pins 5, 6, and 7 must be connected together.

Figure 6-5. NGN Package, 8-Pin WSON (Top View)

Table 6-1. Pin Functions

| | | | PIN | |---------|---------|-----------------|---------|--------|--------|-----|---------------------------------------------------------------------------------| | NAME | TO-252 | WSON | SOT-223 | TO-263 | TO-220 | I/O | DESCRIPTION | | ADJ/GND | 1 | 1 | 1 | 1 | 1 | — | Adjust pin for adjustable output option. Ground pin for fixed
output option. | | VIN | 3 | 2, 3, 4 | 3 | 3 | 3 | I | Input voltage pin for the regulator | | VOUT | 2 , TAB | 5, 6, 7,
TAB | 2, 4 | 2, TAB | 2, TAB | O | Output voltage pin for the regulator |

Electrical Characteristics

unless otherwise specified, $T_J = 25^{\circ}C$

	PARAMETER	TEST C	ONDITIONS	MIN ⁽¹⁾	TYP ⁽²⁾	MAX ⁽¹⁾	UNIT
		LM1117-ADJ I _OUT = 10 mA, V _IN – V _OUT = 2 V, T	_J = 25°C	1.238	1.25	1.262
$V_{REF}$	Reference voltage	LM1117-ADJ	T _J = 25°C		1.25		V
		10 mA $\leq$ I _OUT $\leq$ 800 mA, 1.4 V $\leq$ V _IN - V _OUT $\leq$ 10 V	over the junction temperature range 0°C to 125°C	1.225		1.27
		LM1117-1.8 I _OUT = 10 mA, V _IN = 3.8 V, T _J = 25	°C	1.782	1.8	1.818
		LM1117-1.8	T _J = 25°C		1.8		V
		$0 \le I_{OUT} \le 800 \text{ mA}, 3.2 \text{ V} \le V_{IN} \le 10 \text{ V}$	over the junction temperature range 0°C to 125°C	1.746		1.854
		LM1117-2.5 I _OUT = 10 mA, V _IN = 4.5 V, T _J = 25	°C	2.475	2.5	2.525
		LM1117-2.5	T _J = 25°C		2.5		V
V	Output voltage	$0 \le I_{OUT} \le 800 \text{ mA}, 3.9 \text{ V} \le V_{IN} \le 10 \text{ V}$	over the junction temperature range 0°C to 125°C	2.45		2.55
V _OUT	Output voltage	LM1117-3.3 I _OUT = 10 mA, V _IN = 5 V T _J = 25°C	;	3.267	3.3	3.333
		LM1117-3.3	T _J = 25°C		3.3		V
		0 ≤ I _OUT ≤ 800 mA, 4.75 V ≤ V _IN ≤ 10 V	over the junction temperature range 0°C to 125°C	3.235		3.365
		LM1117-5.0 I _OUT = 10 mA, V _IN = 7 V, T _J = 25°C		4.95	5	5.05
		LM1117-5.0	T _J = 25°C		5		V
		$0 \le I_{OUT} \le 800 \text{ mA}, 6.5 \text{ V} \le V_{IN} \le 12 \text{ V}$	over the junction temperature range 0°C to 125°C	4.9		5.1
		LM1117-ADJ	T _J = 25°C		0.035%
		13.75V $0^{\circ}\text{C to } 125^{\circ}\text{C}$ LM1117-1.8	over the junction temperature range 0°C to 125°C			0.2%
			T _J = 25°C		1
			over the junction temperature range 0°C to 125°C			6	mV
		LM1117-2.5	T _J = 25°C		1
ΔV _OUT	Line regulation ⁽³⁾	$I_{OUT} = 0 \text{ mA}, 3.9 \text{ V} \le V_{IN} \le 10 \text{ V}$	over the junction temperature range 0°C to 125°C			6	mV
		LM1117-3.3	T _J = 25°C		1
		I _OUT = 0 mA, 4.75 V ≤ V _IN ≤ 15 V	over the junction temperature range 0°C to 125°C			6	mV
		LM1117-5.0	T _J = 25°C		1
		$I_{OUT} = 0 \text{ mA}, 6.5 \text{ V} \le V_{IN} \le 15 \text{ V}$	over the junction temperature range 0°C to 125°C			10	mV
		LM1117-ADJ	T _J = 25°C		0.2%
		$V_{IN} - V_{OUT} = 3 \text{ V}, 10 \le I_{OUT} \le 800 \text{ mA}$	over the junction temperature range 0°C to 125°C			0.4%
		LM1117-1.8	T _J = 25°C		1
	$V_{IN} = 3.2 \text{ V}, 0 \le I_{OUT} \le 800 \text{ mA}$	over the junction temperature range 0°C to 125°C			10	mV
	V _OUT Load regulation ⁽³⁾	LM1117-2.5	T _J = 25°C		1
∆V _OUT		$V_{IN} = 3.9 \text{ V}, 0 \le I_{OUT} \le 800 \text{ mA}$	over the junction temperature range 0°C to 125°C			10	mV
		LM1117-3.3	T _J = 25°C		1
		$V_{IN} = 4.75 \text{ V}, 0 \le I_{OUT} \le 800 \text{ mA}$	over the junction temperature range 0°C to 125°C			10	mV
			T _J = 25°C		1
		$V_{IN} = 6.5 \text{ V}, 0 \le I_{OUT} \le 800 \text{ mA}$	over the junction temperature range 0°C to 125°C			15	mV
		0°C to 125°C			10

Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)

	MIN	MAX	UNIT
Maximum input voltage (V _IN to GND)		20	V
Power dissipation ⁽²⁾	Internall	y Limited
Junction temperature (T _J ) ⁽²⁾		150	°C
Storage temperature, T _stg	-65	150	°C

(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The maximum power dissipation is a function of $T_{J(max)}$ , $R_{\theta JA}$ , and $T_A$ . The maximum allowable power dissipation at any ambient temperature is $P_D = (T_{J(max)} T_A)/R_{\theta JA}$ . All numbers apply for packages soldered directly into a PCB.

Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

		MIN	MAX	UNIT
Input voltage (V _IN to GND)			15	V
Junction temperature (T _J ) ⁽¹⁾	LM1117	0	125	°C
Juniculon temperature (11)(17)	LM1117I	-40	125
⁽¹⁾ The maximum power dissipation is a function of $T_{J(max)}$ , $R_{\theta JA}$ , and $T_A$ . The maximum allowable power dissipation at any ambient temperature is $P_D = (T_{J(max)} - T_A)/R_{\theta JA}$ . All numbers apply for packages soldered directly into a PCB.

Thermal Information

| | | | | LM1117, LM1117 | l | |-----------------------|----------------------------------------------|--------|-----------------|-----------------|---------------|-----------------|------| | | THERMAL METRIC(1) | | NDE
(TO-220) | NDP
(TO-252) | NGN
(WSON) | KTT
(TO-263) | UNIT | | | | 4 PINS | 3 PINS | 3 PINS | 8 PINS | 3 PINS | | $R_{\theta JA}$ | Junction-to-ambient thermal resistance | 61.6 | 23.8 | 45.1 | 39.3 | 41.3 | °C/W | | R _0JC(top) | Junction-to-case (top) thermal resistance | 42.5 | 16.6 | 52.1 | 31.4 | 44.1 | °C/W | | $R_{\theta JB}$ | Junction-to-board thermal resistance | 10.4 | 5.3 | 29.8 | 16.5 | 24.2 | °C/W | | ΨЈT | Junction-to-top characterization parameter | 2.9 | 3.1 | 4.5 | 0.3 | 10.9 | °C/W | | ΨЈB | Junction-to-board characterization parameter | 10.3 | 5.3 | 29.4 | 16.7 | 23.2 | °C/W | | R _0JC(bot) | | | 1.5 | 1.3 | 5.6 | 1.3 | °C/W |

⁽¹⁾ For more information about traditional and new thermal metrics, see the Semiconductor and IC package thermal metrics application report.

Product Folder Links: LM1117

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