Details

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BUY TPS5103IDB https://www.utsource.net/itm/p/1402442.html
SMPS Controller

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Input Voltage	VIN	2.9		5.5	V
Output Voltage	VOUT		1.8		V	Fixed output voltage
Quiescent Current	IQ		30		渭A	VIN = 3.6V, VOUT = 1.8V, IOUT = 0mA
Dropout Voltage	VDROPOUT		270		mV	IOUT = 200mA
Load Regulation			1		%	IOUT from 0 to 200mA
Line Regulation			0.1		%	VIN from 2.9V to 5.5V
Power Supply Rejection	PSRR		50		dB	f = 1kHz
Enable Input Voltage	VEN	1.1			V	Enable threshold
Shutdown Current	ISD		0.1		渭A	VIN = 3.6V, EN = 0V

Instructions for TPS5103IDB

1. Power Supply Connection:

   • Connect the input voltage (VIN) within the range of 2.9V to 5.5V.
   • Ensure proper bypassing with a capacitor close to the VIN pin.

2. Output Configuration:

   • The device provides a fixed output voltage of 1.8V.
   • Place an output capacitor at VOUT for stability.

3. Enable Pin:

   • The enable pin (EN) can be used to control the operation of the regulator.
   • Apply a voltage greater than 1.1V to activate the regulator; pull it low or leave it floating to shut down the device.

4. Thermal Considerations:

   • Ensure adequate heat dissipation if operating at high load currents.
   • Keep the junction temperature within safe limits to avoid thermal shutdown.

5. Layout Recommendations:

   • Use short and wide traces for power connections.
   • Maintain a compact layout to minimize parasitic inductance and resistance.

6. Protection Features:

   • The device includes overcurrent and thermal protection.
   • In case of overload, the device will enter a fault condition and attempt to recover once the fault is cleared.

For detailed application circuits and more advanced configurations, refer to the full datasheet provided by the manufacturer.

(For reference only)