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LMZ10501のメーカーはNational Semiconductorです、この部品の機能は「1A SIMPLE SWITCHER Nano Module」です。 |
部品番号 | LMZ10501 |
| |
部品説明 | 1A SIMPLE SWITCHER Nano Module | ||
メーカ | National Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとLMZ10501ダウンロード(pdfファイル)リンクがあります。 Total 20 pages
LMZ10501
October 5, 2011
1A SIMPLE SWITCHER® Nano Module with 5.5V Maximum
Input Voltage
8 Pin LLP-Footprint Package
System Performance
(Quick Overview Links: VOUT = 1.2V, 1.8V, 2.5V, 3.3V)
SE08A 8 Pin Package
30124731
3.0 x 2.5 x 1.2 mm (0.118 x 0.098 x 0.047 in)
RoHS Compliant
Electrical Specifications
■ Up to 1A output current
■ Input voltage range 2.7V to 5.5V
■ Output voltage range 0.6V to 3.6V
■ Efficiency up to 95%
Key Features
■ Integrated inductor
■ Miniature form factor (3.0 mm x 2.5 mm x 1.2 mm)
■ 8-pin LLP footprint
■ -40°C to 125°C junction temperature range
■ Adjustable output voltage
■ 2.0MHz fixed PWM switching frequency
■ Integrated compensation
■ Soft start function
■ Current limit protection
■ Thermal shutdown protection
■ Input voltage UVLO for power-up, power-down, and
brown-out conditions
■ Only 5 external components — resistor divider and 3
ceramic capacitors
Applications
■ Point of load conversions from 3.3V and 5V rails
■ Space constrained applications
■ Low output noise applications
Performance Benefits
■ Small solution size
■ Low output voltage ripple
■ Easy component selection and simple PCB layout
■ High efficiency reduces system heat generation
© 2011 National Semiconductor Corporation 301247
Typical Efficiency at VIN = 3.6V
100
90
80
70
60
50 VOUT = 1.2V
40
VOUT = 1.8V
VOUT = 2.5V
VOUT = 3.3V
30
20
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
LOAD CURRENT (A)
30124730
Output Voltage Ripple
VIN = 5.0V, VOUT = 1.8V, IOUT = 1A
30124733
Radiated EMI (CISPR22)
VIN = 5.0V, VOUT = 1.8V, IOUT = 1A
80 Emissions (Evaluation Board)
70
EN 55022 Class B Limit
EN 55022 Class A Limit
60
50
40
30
20
10
0
0 200 400 600 800 1000
FREQUENCY (MHz)
30124732
www.national.com
1 Page Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VIN, VREF to SGND
PGND to SGND
EN, FB, VCON
VOUT
Junction Temperature (TJ-MAX)
Storage Temperature Range
Maximum Lead Temperature
ESD Susceptibility(Note 2)
−0.2V to +6.0V
−0.2V to +0.2V
(SGND −0.2V)
to (VIN +0.2V)
w/6.0V max
(PGND −0.2V)
to (VIN +0.2V)
w/6.0V max
+150°C
−65°C to +150°C
+260°C
±2kV
Operating Ratings (Note 1)
Input Voltage Range
Recommended Load Current
Junction Temperature (TJ) Range
2.7V to 5.5V
0 mA to 1000 mA
−40°C to +125°C
Thermal Properties
Junction-to-Ambient Thermal
Resistance (θJA), SE08A Package
(Note 3)
120°C/W
Electrical Characteristics (Note 4) Specifications with standard typeface are for TJ = 25°C only; Limits in bold
face type apply over the operating junction temperature range TJ of -40°C to 125°C. Minimum and maximum limits are guaranteed
through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are
provided for reference purposes only. Unless otherwise stated the following conditions apply: VIN = 3.6V, VEN = 1.2V.
Symbol
Parameter
Conditions
Min Typ
Max
(Note 4) (Note 5) (Note 4)
Units
SYSTEM PARAMETERS
VREF x GAIN
Reference voltage x VCON to VIN = VEN = 5.5V, VCON = 1.44V
FB Gain
5.7575
5.875
5.9925
V
GAIN
VINUVLO
VINUVLO
ISHDN
VCON to FB Gain
VIN rising threshold
VIN falling theshold
Shutdown supply current
VIN = 5.5V, VCON = 1.44V
VIN = 3.6V, VEN = 0.5V
(Note 6)
2.4375
2.5
2.4
2.25
11
2.5750
18
V/V
V
V
µA
Iq
RDROPOUT
I LIM
FOSC
VIH,ENABLE
VIL,ENABLE
TSD
TSD-HYST
DMAX
TON-MIN
θJA
DC bias current into VIN
VIN to VOUTresistance
DC Output Current Limit
Internal oscillator frequency
VIN = 5.5V, VCON = 1.6V, IOUT = 0A
IOUT = 200 mA
VCON = 0.24V (Note 7)
Enable logic HIGH voltage
Enable logic LOW voltage
Thermal shutdown
Rising Threshold
Thermal shutdown hysteresis
Maximum duty cycle
Minimum on-time
Package Thermal Resistance 20mm x 20mm board
2 layers, 2 oz copper, 0.5W, no
1125
1.75
1.2
6.5
285
1350
2.0
150
20
100
50
118
8.5
425
2.25
0.5
mA
mΩ
mA
MHz
V
V
°C
°C
%
ns
airlow
15mm x 15mm board
2 layers, 2 oz copper, 0.5W, no
airlow
132
°C/W
10mm x 10mm board
2 layers, 2 oz copper, 0.5W, no
157
airlow
3 www.national.com
3Pages Typical Performance Characteristics
Unless otherwise specified the following conditions apply: VIN = 3.6V, TA = 25°C
Dropout Voltage vs Load Current and Input Voltage
0.35
VIN = 2.7V
0.30 VIN = 3.3V
VIN = 3.6V
0.25 VIN = 4.0V
0.20
0.15
0.10
0.05
0.00
0.0
0.2 0.4 0.6 0.8
LOAD CURRENT (A)
1.0
30124749
Thermal Derating VOUT = 1.8V, θJA = 120°C/W
1.2
VIN = 3.3V
1.0
VIN = 3.6V
VIN = 5.0V
VIN = 5.5V
0.8
0.6
0.4
0.2
0.0
60 70 80 90 100 110 120 130
AMBIENT TEMPERATURE (°C)
30124743
Thermal Derating VOUT = 1.2V, θJA = 120°C/W
1.2
VIN = 3.3V
1.0
VIN = 3.6V
VIN = 5.0V
VIN = 5.5V
0.8
0.6
0.4
0.2
0.0
60 70 80 90 100 110 120 130
AMBIENT TEMPERATURE (°C)
30124744
Thermal Derating VOUT = 2.5V, θJA = 120°C/W
1.2
VIN = 3.3V
1.0
VIN = 3.6V
VIN = 5.0V
VIN = 5.5V
0.8
0.6
0.4
0.2
0.0
60 70 80 90 100 110 120 130
AMBIENT TEMPERATURE (°C)
30124742
www.national.com
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