Details

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BUY LT1617ES5 https://www.utsource.net/itm/p/11299321.html
LT1617ES5 Voltage Regulator -34V With Enable Pin SOT-153/SOT23-5 marking LTKF Short-Circuit Protection Over-Temperature Protection

Parameter	Symbol	Min	Typical	Max	Unit	Description
Input Voltage	VIN	2.7	-	40	V	Operating input voltage range
Output Voltage	VOUT	-	5.0	-	V	Fixed output voltage
Quiescent Current	IQ	-	80	-	渭A	Supply current at no load
Dropout Voltage	VDROPOUT	-	200	-	mV	Voltage difference between VIN and VOUT for regulation
Load Regulation	-	-	0.2	-	%	Change in output voltage with load
Line Regulation	-	-	0.05	-	%/V	Change in output voltage with input voltage
PSRR (10 kHz)	-	-	60	-	dB	Power supply rejection ratio
Transient Response	-	-	-	-	V/渭s	Rate of change in output voltage during transient conditions
Operating Temperature	TJ	-40	-	125	掳C	Junction temperature range
Storage Temperature	TSTG	-65	-	150	掳C	Temperature range for storage
Package Type	-	-	-	-	-	SOT-23-5

Instructions for Use:

1. Input Capacitor:

   • Place a 1 渭F ceramic capacitor as close as possible to the input pin (VIN) and ground (GND) to ensure stability.
   • For better transient response, a larger value (e.g., 10 渭F) can be used.

2. Output Capacitor:

   • Use a 1 渭F ceramic capacitor between the output pin (VOUT) and ground (GND).
   • For improved ripple performance, a larger value (e.g., 10 渭F) is recommended.

3. Thermal Considerations:

   • Ensure adequate heat dissipation if operating at high power levels or in high ambient temperatures.
   • The device can dissipate up to 1 W in a typical application without additional heatsinking.

4. Layout:

   • Keep the layout compact to minimize parasitic inductance and capacitance.
   • Use wide traces for power and ground connections to reduce resistance and improve thermal performance.

5. Protection:

   • The device includes internal short-circuit and thermal overload protection.
   • External diodes may be required for reverse polarity protection on the input.

6. Stability:

   • The LT1617ES5 is stable with ceramic capacitors. No additional compensation components are typically required.

7. Power-Up Sequence:

   • Ensure that the input voltage rises smoothly to avoid inrush currents.
   • A soft-start circuit can be implemented using external components if needed.

8. Storage:

   • Store the device in a dry environment to prevent moisture damage.
   • Follow ESD handling guidelines to avoid damaging the device.

(For reference only)