LM3495MTCX ,Emulated Peak Current Mode Buck Controller for Low Output Voltage 16-TSSOP -40 to 125Connection DiagramBOOST 1 16 PGNDHG LG2 15SW/CSH 3 14 VLIN5CSL4 13 VINLM3495ILIM 5 12 SGNDCOMP/SDFP ..
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LM3495MTCX
Emulated Peak Current Mode Buck Controller for Low Output Voltage
SNSFPWM
PGND
CSL
ILIM
SW/CSH
BOOST
RILIM
CIN
VIN
VO
LM3495SGND
FREQ/SYNC
VIN VLIN5
TRACK
CDD
CINX
The LM3495 is a PWM buck regulator which
Input Voltage from 2.9Vto 18V implementsa unique emulated peak current mode
• Output Voltage Adjustable from 0.6Vto 5.5V control. This control method eliminates the switching
Feedback Accuracy: ±1% noise which typically limits current mode operationat
extremely short duty cycles and high operating
• Low-Side Sensing, Programmable Current frequency. The switching frequencyis programmable
Limit without Sense Resistor between 200 kHz and 1.5 MHz, and can also be
• Input Under Voltage Lockout synchronizedto an external clock. The LM3495is
Hiccup Mode Current Limit Protection also very fault tolerant with both switch node short,
Eliminates Thermal Runaway During Fault hiccup mode, and adaptive duty cycle limit protection. 0.6V 1% reference and glitch free pre-biased start-
Conditions ensure the most demanding digital loads operate
• Internal Soft Start with Tracking Capability reliably. Internal soft start and the abilityto track the
• 200 kHzto 1.5 MHz Switching Frequency, outputof another supply make the LM3495 versatile
Synchronizable and efficient.
On-Chip Gate Drivers
APPLICATIONS• Soft Output Discharge During Shutdown Wide Input Voltage Buck Converters with Low• Startup into Output Pre-Bias
Voltage, High Accuracy Outputs• Operation froma Single Input Rail Core Logic Regulators• Adaptive Duty Cycle Limit High-Efficiency Buck Regulation• TSSOP-16 Package
Typical Application
