Details

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BUY LM2660M https://www.utsource.net/itm/p/6760335.html
IC REG CHARGE PUMP INV 8SOIC

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	Continuous	2.7	-	5.5	V
Output Voltage (Step-Up)	VOUT1		3.3	-	5.0	V
Output Voltage (Step-Down)	VOUT2		1.8	-	3.3	V
Quiescent Current	IQ	VIN = 3V, No Load	-	45	-	μA
Switching Frequency	fSW		-	1.0	-	MHz
Efficiency	η	VIN = 3.3V, IOUT=100mA	-	85	-	%
Shutdown Current	ISD	VIN = 3V	-	0.1	-	μA

Instructions for LM2660M

1. Input Voltage Range:

   • Ensure the input voltage is within the specified range of 2.7V to 5.5V.

2. Output Configuration:

   • For step-up output, configure the external components for a desired output voltage between 3.3V and 5.0V.
   • For step-down output, configure the external components for a desired output voltage between 1.8V and 3.3V.

3. Quiescent Current Management:

   • The quiescent current is typically 45μA at no load. Design your circuit considering this value for power budgeting.

4. Switching Frequency:

   • The device operates at a typical switching frequency of 1.0MHz. Ensure that the PCB layout minimizes noise and interference at this frequency.

5. Efficiency Considerations:

   • The efficiency can reach up to 85% under typical conditions (VIN = 3.3V, IOUT = 100mA). Optimize component selection for better performance.

6. Shutdown Mode:

   • Use the shutdown feature to reduce power consumption. In shutdown mode, the current draw is minimized to approximately 0.1μA.

7. Thermal Considerations:

   • Ensure adequate heat dissipation in the design to prevent overheating, especially under high load conditions.

8. Component Selection:

   • Choose capacitors and inductors with appropriate ratings to handle the maximum expected currents and voltages.

9. PCB Layout:

   • Follow recommended PCB layout guidelines provided by the manufacturer to ensure optimal performance and reliability.

(For reference only)