LP38852EVAL National Semiconductor, LP38852EVAL Datasheet
![no-image](/images/manufacturer_photos/0/4/469/national_semiconductor_sml.jpg)
LP38852EVAL
Specifications of LP38852EVAL
Related parts for LP38852EVAL
LP38852EVAL Summary of contents
Page 1
... Soft-Start: Programmable Soft-Start time. Precision ADJ Voltage: ±1.5% for T ≤ ≤ 0°C T +125°C, across all line and load conditions J Typical Application Circuit © 2010 National Semiconductor Corporation LP38852 Features ■ Adjustable V ■ Wide V ■ Stable with 10µF Ceramic capacitors ■ ...
Page 2
Ordering Information V Order Number OUT LP38852S-ADJ LP38852SX-ADJ ADJ LP38852T-ADJ LP38852MR-ADJ LP38852MRX-ADJ Connection Diagrams TO263-7, Top View PSOP-8, Top View Pin Descriptions TO220–7 TO263–7 PSOP-8 Pin # Pin # ...
Page 3
... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range Lead Temperature Soldering, 5 seconds ESD Rating Human Body Model (Note 2) Power Dissipation (Note 3) V Supply Voltage (Survival Supply Voltage (Survival) ...
Page 4
Symbol Parameter Soft-Start r Soft-Start internal resistance SS Soft-Start time × r × Enable I ENABLE pin Current EN V Enable Voltage Threshold EN(ON) V Enable Voltage Hysteresis EN(HYS) t Turn-OFF ...
Page 5
Typical Performance Characteristics specified 25° 1.40 kΩ 1.00 kΩ Ceramic µF Ceramic, C OUT BIAS V Ground Pin Current (I BIAS GND(BIAS) V Ground Pin Current vs Temperature IN ...
Page 6
V vs Temperature OUT UVLO Thresholds vs Temperature OUT SS www.national.com 20213967 Soft-Start r SS 20213968 Enable Thresholds (V 20213976 OUT IN 20213972 Variation vs Temperature 20213975 ...
Page 7
Enable Pull-Down Current ( Temperature EN V Line Transient Response IN V Line Transient Response BIAS Enable Pull-Up Resistor (r 20213989 V Line Transient Response IN 20213977 V Line Transient Response BIAS 20213979 Temperature EN ...
Page 8
Load Transient Response, C Load Transient Response, C Load Transient Response, C www.national.com = 10 µF Ceramic Load Transient Response, C OUT 20213981 = 100 µF Ceramic Load Transient Response, C OUT 20213983 = 100 µF Tantalum Load Transient Response, ...
Page 9
V PSRR BIAS 20213970 Output Noise 20213969 9 V PSRR IN 20213971 www.national.com ...
Page 10
Block Diagram www.national.com 10 20213905 ...
Page 11
Application Information EXTERNAL CAPACITORS To assure regulator stability, input and output capacitors are required as shown in the Typical Application Circuit. Output Capacitor A minimum output capacitance of 10 µF, ceramic, is required for stability. The amount of output capacitance ...
Page 12
TABLE OUT 0.8V 1.07 kΩ 1.78 kΩ 0.9V 1.50 kΩ 1.87 kΩ 1.0V 1.00 kΩ 1.00 kΩ 1.1V 1.65 kΩ 1.37 kΩ 1.2V 1.40 kΩ 1.00 kΩ 715 Ω 1.3V 1.15 kΩ 590 Ω 1.4V 1.07 ...
Page 13
Typical C values will be in the range 100 nF, SS providing typical Soft-Start times in the range of 70 μ (5τ). Values less than 1 nF can be used, but the Soft-Start ...
Page 14
Heat-Sinking The TO-263 Package The TO-263 package has a θ rating of 60°C/W, and a θ JA rating of 3°C/W. These ratings are for the package only, no additional heat-sinking, and with ...
Page 15
Physical Dimensions inches (millimeters) unless otherwise noted TO-220 7-Lead, Stagger Bend Package (TO220-7) TO-263 7-Lead, Molded, Surface Mount Package (TO263-7) NS Package Number TA07B NS Package Number TS7B 15 www.national.com ...
Page 16
PSOP, 8 Lead, Molded, 0.050in Pitch NS Package Number MRA08B 16 ...
Page 17
Notes 17 www.national.com ...
Page 18
... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...