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PDF LMZ13608TZ Data sheet ( Hoja de datos )
| Número de pieza | LMZ13608TZ | |
| Descripción | 8A SIMPLE SWITCHER Power Module | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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LMZ13608
September 15, 2011
8A SIMPLE SWITCHER® Power Module with 36V Maximum
Input Voltage
Easy to use 11 pin package
Performance Benefits
■ High efficiency reduces system heat generation
■ Low radiated emissions (EMI) complies with EN55022
class B standard (Note 2)
■ Only 7 external components
■ Low output voltage ripple
■ No external heat sink required
System Performance
TO-PMOD 11 Pin Package
30151401
15 x 17.79 x 5.9 mm (0.59 x 0.7 x 0.232 in)
θJA = 9.9 °C/W, θJC = 1.0 °C/W (Note 1)
RoHS Compliant
Electrical Specifications
■ 40W maximum total output power
■ Up to 8A output current
■ Input voltage range 6V to 36V
■ Output voltage range 0.8V to 6V
■ Efficiency up to 92%
Key Features
■ Integrated shielded inductor
■ Simple PCB layout
■ Fixed switching frequency (350 kHz)
■ Flexible startup sequencing using external soft-start,
tracking and precision enable
■ Protection against inrush currents and faults such as input
UVLO and output short circuit
■ – 40°C to 125°C junction temperature range
■ Single exposed pad and standard pinout for easy
mounting and manufacturing
■ Fully enabled for Webench® Power Designer
■ Pin compatible with LMZ22010/08, LMZ12010/08,
LMZ23610/08/06H, and LMZ13610/06H
Applications
■ Point of load conversions from 12V and 24V input rail
■ Time critical projects
■ Space constrained / high thermal requirement applications
■ Negative output voltage applications (See AN-2027)
Efficiency VIN = 24V VOUT = 3.3V
100
90
80
70
60
50
40
30
20
0
24 Vin
1234567
OUTPUT CURRENT (A)
8
30151402
Thermal derating curve
VIN = 24V, VOUT = 3.3V
10
8
6
4
2
θJA = 9.9 °C/W
θJA = 6.8 °C/W
θJA = 5.2 °C/W
0
20 40 60 80 100 120
TEMPERATURE (C)
30151403
Radiated EMI (EN 55022)
VIN = 24V, VOUT = 5V, IOUT = 8A
50
40
30
20
10 Horizontal Peak
Vertical Peak
Class B Limit
0 Class A Limit
0 100 200 300 400 500 600 700 800 9001000
FREQUENCY (MHz)
30151417
Note 1: θJA measured on a 75mm x 90mm four layer PCB.
Note 2: EN 55022:2006, +A1:2007, FCC Part 15 Subpart B, tested on
Evaluation Board with EMI configuration
© 2011 National Semiconductor Corporation 301514
www.national.com
1 page  
Note 3: 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 4: 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 5: 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 6: Typical numbers are at 25°C and represent the most likely parametric norm.
Note 7: Theta JA measured on a 3.0” x 3.5” four layer board, with two ounce copper on outer layers and one ounce copper on inner layers, two hundred and ten
12 mil thermal vias, and 2W power dissipation. Refer to evaluation board application note layout diagrams.
Note 8: Refer to BOM in Typical Application Bill of Materials — Table 1.
5 www.national.com
5 Page 
Normalized line and load regulation VOUT = 3.3V
1.002
1.001
1.000
0.999
0.998
0
6 Vin
8 Vin
10 Vin
12 Vin
16 Vin
20 Vin
24 Vin
36 Vin
1234567
OUTPUT CURRENT (A)
8
30151462
Thermal derating VIN = 24V, VOUT = 3.3V
10
8
6
4
2
θJA = 9.9 °C/W
θJA = 6.8 °C/W
θJA = 5.2 °C/W
0
20 30 40 50 60 70 80 90 100 110 120
TEMPERATURE (C)
30151464
Output ripple
12VIN, 5.0VOUT @ Full Load, BW = 20 MHz
Thermal derating VIN = 24V, VOUT = 5.0V
10
8
6
4
2
θJA = 9.9 °C/W
θJA = 6.8 °C/W
θJA = 5.2 °C/W
0
20 30 40 50 60 70 80 90 100 110 120
TEMPERATURE (C)
30151463
θJA vs copper heat sinking area
30 2 Layer 0 LFPM
27
2 Layer 225 LFPM
4 Layer 0 LFPM
24 4 Layer 225 LFPM
21
18
15
12
9
6
3
0 2 4 6 8 10 12
COPPER AREA (in2)
30151465
Output ripple
12VIN, 5.0VOUT@ Full Load, BW = 250 MHz
30151466
11
30151469
www.national.com
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| PDF Descargar | [ Datasheet LMZ13608TZ.PDF ] | |
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