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PDF LMZ10501 Data sheet ( Hoja de datos )
| Número de pieza | LMZ10501 | |
| Descripción | 1A SIMPLE SWITCHER Nano Module | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LMZ10501 (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
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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  
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the
device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: The human body model is a 100pF capacitor discharged through a 1.5 kΩ resistor into each pin. Test method is per JESD-22-114.
Note 3: Junction-to-ambient thermal resistance (θJA) is based on 4 layer board thermal measurements, performed under the conditions and guidelines set forth
in the JEDEC standards JESD51-1 to JESD51-11. θJA varies with PCB copper area, power dissipation, and airflow.
Note 4: Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are guaranteed through correlation using Statistical
Quality Control (SQC) methods. Limits are used to calculate National’s Average Outgoing Quality Level (AOQL).
Note 5: Typical numbers are at 25°C and represent the most likely parametric norm.
Note 6: Shutdown current includes leakage current of the high side PFET.
Note 7: Current limit is built-in, fixed, and not adjustable.
Note 8: Ripple voltage should be measured across COUT on a well-designed PC board using the suggested capacitors.
5 www.national.com
5 Page 
3.3V
Schematic VOUT = 3.3V
30124725
Output Ripple VOUT = 3.3V
Efficiency VOUT = 3.3V
100
90
80
70
60
50 VIN = 3.6V
40
VIN = 4.0V
VIN = 4.5V
VIN = 5.0V
30 VIN = 5.5V
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)
30124729
Load Transient VOUT = 3.3V
30124756
Line and Load Regulation VOUT = 3.3V
3.30
3.28
3.26
VIN = 3.6V
3.24 VIN = 4.0V
VIN = 4.5V
VIN = 5.0V
VIN = 5.5V
3.22
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)
30124740
Block Diagram
30124759
DC Current Limit VOUT = 3.3V
1.5
1.4 TA = 85°C
1.3
1.2
1.1
1.0
2.5
3.0 3.5 4.0 4.5 5.0
INPUT VOLTAGE (V)
5.5
30124754
11 www.national.com
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet LMZ10501.PDF ] | |
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