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What is LM5015MHE?

This electronic component, produced by the manufacturer "National Semiconductor", performs the same function as "High Voltage Monolithic Two-Switch Forward DC-DC Regulator".


LM5015MHE Datasheet PDF - National Semiconductor

Part Number LM5015MHE
Description High Voltage Monolithic Two-Switch Forward DC-DC Regulator
Manufacturers National Semiconductor 
Logo National Semiconductor Logo 


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December 10, 2007
LM5015
High Voltage Monolithic Two-Switch Forward DC-DC
Regulator
General Description
The LM5015 high voltage switch mode regulator features all
the functions necessary to implement efficient high voltage
Two-Switch Forward and Two-Switch Flyback regulators, us-
ing a minimum of external components. This easy to use
regulator integrates high side and low side 75 Volt N-Channel
MOSFETs with a minimum 1 Amp peak current limit. The
voltage across the MOSFETs employed in the two-switch
topology is clamped to the input voltage, allowing the input
voltage range to approach the rating of the MOSFETs. The
regulator control method is based on current mode control
providing inherent ease of loop compensation and line feed-
forward for superior rejection of input transients.
The operating frequency is set with a single resistor and is
programmable up to 750 kHz. The oscillator can also be syn-
chronized to an external clock. Additional protection features
include cycle-by-cycle current limiting, thermal shutdown, un-
der-voltage lockout and remote shutdown capability. The de-
vice is available in the TSSOP-14EP package featuring an
exposed die attach pad to enhance thermal dissipation.
Features
Dual Integrated 75V N-Channel MOSFETs
Ultra-wide input voltage range: 4.25V to 75V
Integrated high voltage bias regulator
Adjustable output voltage
1.5% feedback reference accuracy
Current mode control with selectable compensation
Wide bandwidth error amplifier
Integrated current sensing and limiting
50% maximum duty cycle limit
Single resistor oscillator programming
Oscillator synchronization capability
Programmable soft-start
Enable / Under-voltage Lockout (UVLO) pin
Thermal shutdown
Package
TSSOP-14EP (Exposed Pad)
Typical Application Schematic
© 2007 National Semiconductor Corporation 300346
30034601
www.national.com

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LM5015MHE equivalent
Symbol
Parameters
PWM COMPARATOR
Maximum Duty Cycle
Min On-time
Min On-time
VCOMP-OS
COMP to PWM Comparator
Offset
ERROR AMPLIFIER
VFB-REF
Feedback Reference Voltage
FB Bias Current
DC Gain
COMP Sink Current
COMP Short Circuit Current
COMP Open Circuit Voltage
COMP to SW Delay
Unity Gain Bandwidth
SOFT START
Soft-start Current Source
Soft-start to COMP Offset
THERMAL SHUTDOWN
TSD Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
THERMAL RESISTANCE
θJC Junction to Case
θJA Junction to Ambient
Conditions
VCOMP > VCOMP-OS
VCOMP < VCOMP-OS
Internal reference, VFB = VCOMP
VCOMP = 250mV
VFB = 0, VCOMP = 0
VFB = 0
Min Typ Max Units
49 %
140 ns
0 ns
0.9 1.3 1.55 V
1.236
2
0.9
4.5
1.26 1.274
10
72
1.2 1.5
5.15 5.95
50
4
V
nA
dB
mA
mA
V
ns
MHz
8 11 14 µA
0.3 0.5 0.7
V
165 °C
25 °C
6.6 °C/W
40 °C/W
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 kresistor into each pin. Test Method is per JESD-22-A114.
Note 3: 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).
5 www.national.com


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On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for LM5015MHE electronic component.


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