Microsemi Corporation LX8386A-00CP, LX8386A-00CDD, LX8386-33CP, LX8386-33CDD, LX8386-00IP Datasheet
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LIN DO C # : 8386 |
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LX8386-xx/8386A-xx/8386B-xx |
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1 . 5 A L O W D R O P O U T P O S I T I V E R E G U L A T O R S |
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T H E I N F I N I T E P O W E R O F I N N O V A T I O N |
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P R O D U C T I O N D A T A S H E E T |
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D E S C R I P T I O N
The LX8386/86A/86B series ICs are positive regulators designed to provide 1.5A output current. These regulators yield higher efficiency than currently available devices with all internal circuitry designed to operate down to a 1V input-to-output differential. In this product, the dropout voltage is fully specified as a function of load current. Dropout is guaranteed at a maximum of 1.3V (LX8386A/86B) and 1.5V (LX8386) at maximum output current, decreasing at lower load currents. On-chip trimming adjusts the reference voltage to 1% (0.8% for the 8386B) initial accuracy and 2% (1% for the 8386B) over line, load and temperature.
The LX8386/86A/86B series devices
are pin-compatible with earlier 3- terminal regulators, such as 117 series products. While a 10µF output capacitor is required on both input and output of these new devices, this capacitor is generally included in most regulator designs.
The LX8386/86A/86B series quiescent current flows into the load, increasing efficiency. This feature contrasts with PNP regulators, where up to 10% of the output current is wasted as quiescent current. The LX8386-xxI is specified over the full industrial temperature range of -25°C to +125°C and the LX8386/86A/86B-xxC is specified over the commercial range of 0°C to +125°C.
NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.
P R O D U C T H I G H L I G H T
3.3V, 1.5A RE G U L AT O R
5V |
IN |
LX8386 |
OUT |
3.3V at 1.5A |
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1500µF |
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ADJ |
121Ω |
1500µF, 6.3V |
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1% |
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6MV1500GX |
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6MV1500GX |
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from Sanyo |
200Ω 
1%
K E Y F E AT U R E S
■Three-Terminal Adjustable or Fixed Output
■Guaranteed <1.3V Headroom at 1.5A (LX8386A/86B)
■Output Current of 1.5A Minimum
■Operates Down to 1V Dropout
p0.015% Line Regulation
p0.1% Load Regulation
■Evaluation Board Available: Request LXE9001 EVALUATION KIT
A P P L I C AT I O N S
■High Efficiency Linear Regulators
■Post Regulators For Switching Power Supplies
■Battery Chargers
■Constant Current Regulators
■ASIC & Low Voltage IC Supplies
■Memory Cards
■Graphics & Sound Chipsets
AVA I L A B L E O P T I O N S P E R PA R T #
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Part # |
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Output |
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Voltage |
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LX8386/86A/86B-00 |
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Adjustable |
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LX8386/86A/86B-33 |
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3.3V |
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Other voltage options may be available — Please contact factory for details.
PA C K A G E O R D E R I N F O R M AT I O N
TA (°C) |
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Max. Ref. |
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Max. Dropout |
P |
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Plastic TO-220 |
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DD |
Plastic TO-263 |
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DT |
Plastic T0-252 |
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Accuracy |
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Voltage |
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3-pin |
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3-pin |
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(D-Pak) 3-pin |
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2.0% |
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1.5V |
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LX8386-xxCP |
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LX8386-xxCDD |
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LX8386-xxCDT |
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0 to 125 |
2.0% |
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1.3V |
LX8386A-xxCP |
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LX8386A-xxCDD |
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LX8386A-xxCDT |
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1.0% |
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1.3V |
LX8386B-xxCP |
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LX8386B-xxCDD |
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LX8386B-xxCDT |
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-25 to 125 |
2.0% |
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1.5V |
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LX8386-xxIP |
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LX8386-xxIDD |
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— |
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Note: All surface-mount packages are available in Tape & Reel, append the letter "T" to part number. (i.e. LX8386A-xxCDDT) "xx" refers to output voltage, please see table above.
Copyright © 1999 |
L I N F I N I T Y M I C R O E L E C T R O N I C S I N C . |
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11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570 |
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Rev. 1.7a 10/00 |
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
LX8386-xx/8386A-xx/8386B-xx
1 . 5 A L O W D R O P O U T P O S I T I V E R E G U L A T O R S
P R O D U C T I O N D A T A S H E E T
ABSOLUTE MAXIMUM RATINGS |
(Note 1) |
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Power Dissipation .................................................................................. |
Internally Limited |
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Input Voltage ................................................................................................................ |
10V |
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Input to Output Voltage Differential ........................................................................... |
10V |
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Maximum Output Current .......................................................................................... |
1.5A |
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Operating Junction Temperature |
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Plastic (P, DD & DT Packages) ............................................................................ |
150°C |
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Storage Temperature Range ...................................................................... |
-65°C to 150°C |
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Lead Temperature (Soldering, 10 seconds) ............................................................. |
300°C |
Note 1. Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal.
THERMAL DATA
P PACKAGE:
THERMAL RESISTANCE-JUNCTION TO TAB, θJT |
3.0°C/W |
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA |
60°C/W |
DD PACKAGE: |
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THERMAL RESISTANCE-JUNCTION TO TAB, θJT |
3.0°C/W |
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA |
*60°C/W |
DT PACKAGE: |
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THERMAL RESISTANCE-JUNCTION TO TAB, θJT |
9°C/W |
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA |
*80°C/W |
Junction Temperature Calculation: TJ = TA + (PD x θJA).
The θJA numbers are guidelines for the thermal performance of the device/pc-board system. All of the above assume no ambient airflow.
*θJAcan be improved with package soldered to 0.5IN2 copper area over backside ground plane or internal power plane. θJAcan vary from 20ºC/W to > 40ºC/W depending on mounting technique.
PACKAGE PIN OUTS
TAB IS VOUT
3 
VIN
2 
VOUT
1 
ADJ / GND*
P PACKAGE
(Top View)
* Pin 1 is GND for fixed voltage versions.
TAB IS VOUT
3 
VIN
2 
VOUT
1
ADJ / GND*
DDPACKAGE
(Top View)
* Pin 1 is GND for fixed voltage versions.
TAB IS VOUT
3. VIN
2. VOUT
1. ADJ / GND*
DT PACKAGE (D-Pak)
(Top View)
* Pin 1 is GND for fixed voltage versions.
BLOCK DIAGRAM
VIN
Bias |
Circuit |
Thermal |
Bandgap |
Control |
Output |
Limit Circuit |
Circuit |
Circuit |
Circuit |
VOUT
SOA Protection
Circuit
ADJ or |
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Current |
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GND* |
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Limit Circuit |
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* This pin GND for fixed voltage versions.
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Copyright © 1999 |
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Rev. 1.7a 10/00 |
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P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
LX8386-xx/8386A-xx/8386B-xx
1 . 5 A L O W D R O P O U T P O S I T I V E R E G U L A T O R S
P R O D U C T I O N D A T A S H E E T
E L E C T R I C A L C H A R A C T E R I S T I C S
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for the LX8386/86A/86B-xxC with 0°C ≤ TA ≤ 125°C, and the LX8386-xxI with -25°C ≤ TA ≤ 125°C; VIN - VOUT = 3V; IOUT = 1.5A. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.)
LX8386/86A/86B-00 (Adjustable)
Parameter |
Symbol |
Test Conditions |
LX8386/86A/86B-00 |
Units |
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Min. |
Typ. |
Max. |
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Reference Voltage |
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LX8386/86A-00 |
VREF |
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IOUT = 10mA, TA = 25°C |
1.238 |
1.250 |
1.262 |
V |
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(Note 4) |
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10mA ≤ IOUT ≤ IOUT (MAX), 1.5V ≤ (VIN - VOUT), VIN ≤ 10V, P ≤ PMAX |
1.225 |
1.250 |
1.270 |
V |
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LX8386B-00 |
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IOUT = 10mA, TA = 25°C |
1.240 |
1.250 |
1.260 |
V |
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10mA ≤ IOUT ≤ IOUT (MAX), 1.5V ≤ (VIN - VOUT), VIN ≤ 10V, P ≤ PMAX |
1.238 |
1.250 |
1.262 |
V |
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Line Regulation (Note 2) |
VREF(VIN) |
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1.5V ≤ (VIN - VOUT) ≤ 7V, IOUT = 10mA |
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0.015 |
0.2 |
% |
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Load Regulation (Note 2) |
VREF(IOUT) |
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VIN - VOUT = 3V, 10mA ≤ IOUT ≤ 1.5A |
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0.15 |
0.4 |
% |
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Thermal Regulation |
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VOUT(Pwr) |
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TA = 25°C, 20ms pulse |
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0.01 |
0.04 |
%/W |
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Ripple Rejection (Note 3) |
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VOUT = 5V, f =120Hz, COUT = 100µf Tantalum, VIN = 6.5V |
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dB |
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CADJ = 10µF, IOUT = 1.5A |
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Adjust Pin Current |
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IADJ |
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100 |
µA |
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Adjust Pin Current Change (Note 4) |
IADJ |
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10mA ≤ IOUT ≤ IOUT (MAX) , 1.5V ≤ (VIN - VOUT), VIN ≤ 10V |
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0.2 |
5 |
µA |
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Dropout Voltage |
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LX8386-00 |
V |
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VREF = 1%, IOUT = 1.5A |
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1.2 |
1.5 |
V |
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LX8386A/86B-00 |
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VREF = 1%, IOUT = 1.5A |
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1.1 |
1.3 |
V |
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Minimum Load Current |
IOUT (MIN) |
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VIN ≤ 10V |
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2 |
10 |
mA |
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Maximum Output Current |
IOUT (MAX) |
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(VIN - VOUT) ≤ 7V |
1.5 |
2.0 |
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A |
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Temperature Stability (Note 3) |
VOUT (T) |
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0.25 |
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% |
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Long Term Stability |
(Note 3) |
VOUT (t) |
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TA = 125°C, 1000 hours |
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0.3 |
1 |
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RMS Output Noise (% of VOUT) (Note 3) |
VOUT (RMS) |
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TA = 25°C, 10Hz ≤ f ≤ 10kHz |
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0.003 |
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% |
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LX8386/86A/86B-33 (3.3V Fixed)
Parameter |
Symbol |
Test Conditions |
LX8386/86A/86B-33 |
Units |
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Min. |
Typ. |
Max. |
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Output Voltage |
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LX8386-33 |
VOUT |
VIN = 5V, IOUT = 0mA, TA = 25°C |
3.267 |
3.30 |
3.333 |
V |
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(Note 4) |
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4.75V ≤ VIN ≤ 10V, 0mA ≤ IOUT ≤ 1.5A, P ≤ PMAX |
3.235 |
3.30 |
3.365 |
V |
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LX8386A/86B-33 |
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VIN = 5V, IOUT = 0mA, TA = 25°C |
3.274 |
3.30 |
3.326 |
V |
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4.75V ≤ VIN ≤ 10V, 0mA ≤ IOUT ≤ 1.5A, P ≤ PMAX |
3.267 |
3.30 |
3.333 |
V |
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Line Regulation (Note 2) |
VOUT |
4.75V ≤ VIN ≤ 7V |
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1 |
6 |
mV |
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(VIN) |
4.75V ≤ VIN ≤ 10V |
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2 |
10 |
mV |
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Load Regulation (Note 2) |
VOUT (IOUT) |
VIN = 5V, 0mA ≤ IOUT ≤ IOUT (MAX) |
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5 |
15 |
mV |
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Thermal Regulation |
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VOUT(Pwr) |
TA = 25°C, 20ms pulse |
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0.01 |
0.02 |
% / W |
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Ripple Rejection (Note 3) |
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COUT = 100µF (Tantalum), IOUT = 1.5A |
60 |
83 |
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dB |
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Quiescent Current |
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IQ |
0mA ≤ IOUT ≤ IOUT (MAX) , 4.75V ≤ VIN ≤ 10V |
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4 |
10 |
mA |
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Dropout Voltage |
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LX8386-33 |
V |
VOUT = 1%, IOUT ≤ IOUT (MAX) |
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1.2 |
1.5 |
V |
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LX8386A/86B-33 |
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VOUT = 1%, IOUT ≤ IOUT (MAX) |
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1.1 |
1.3 |
V |
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Maximum Output Current |
IOUT (MAX) |
VIN ≤ 7V |
1.5 |
2.0 |
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A |
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Temperature Stability (Note 3) |
VOUT (T) |
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0.25 |
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% |
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Long Term Stability |
(Note 3) |
VOUT (t) |
TA = 125°C, 1000 hours |
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0.3 |
1 |
% |
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RMS Output Noise (% of VOUT) (Note 3) |
VOUT (RMS) |
TA = 25°C, 10Hz ≤ f ≤ 10kHz |
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0.003 |
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% |
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Note 2. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation.
Note 3. These parameters, although guaranteed, are not tested in production. Note 4. See Maximum Output Current Section above.
Copyright © 1999 |
3 |
Rev. 1.7a 10/00 |
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