MIC5504-1.0YMT-T5

Part: MIC5501/2/3/4 — Microchip Type: Single Output LDO Description: The MIC5501/2/3/4 is a 2.5–5.5V input, 300 mA single output LDO with 2% initial accuracy, low dropout voltage (160 mV at 300 mA), and low quiescent current (38 μA), available in ultra-small 1 mm x 1 mm DFN and SOT23 packages.

Operating Conditions:

• Supply voltage: 2.5V to 5.5V
• Operating junction temperature: -40°C to +125°C
• Fixed output voltages: 1.0V to 3.3V

Absolute Maximum Ratings:

• Max supply voltage: +6V
• Max junction temperature: +150°C

Key Specs:

• Output Voltage Accuracy: ±2.0% (at +25°C), ±3.0% (-40°C to +125°C)
• Load Regulation: 8 mV (typ) (I OUT = 100 μA to 300 mA)
• Dropout Voltage: 160 mV (typ) (I OUT = 300 mA)
• Ground Pin Current: 38 μA (typ) (I OUT = 0 mA)
• Ground Pin Current in Shutdown: 0.05 μA (typ) (V EN = 0V)
• Current Limit: 400 mA (min) to 900 mA (max) (V OUT = 0V)
• Output Voltage Noise: 175 μV RMS (typ) (C OUT = 1 μF, 10 Hz to 100 kHz)
• Turn-On Time: 50 μs (typ) (C OUT = 1 μF; I OUT = 150 mA)

Features:

• 300 mA Guaranteed Output Current
• Stable with 1 μF Ceramic Output Capacitors
• Output Discharge Circuit (MIC5502, MIC5504)
• Internal Enable Pull-Down (MIC5503, MIC5504)
• Thermal-Shutdown and Current-Limit Protection
• Zero-off-mode current state

Applications:

• Smartphones
• DSC, GPS, PMP, and PDAs
• Medical Devices
• Portable Electronics
• 5V Systems

Package:

• 4-Lead 1.0 mm x 1.0 mm Thin DFN
• 5-Lead SOT23

• Input Voltage Range: 2.5V to 5.5V
• Fixed Output Voltages from 1.0V to 3.3V
• 300 mA Guaranteed Output Current
• High Output Accuracy (±2%)
• Low Quiescent Current: 38 μA
• Stable with 1 μF Ceramic Output Capacitors
• Low Dropout Voltage: 160 mV @ 300 mA
• Output Discharge Circuit: MIC5502, MIC5504
• Internal Enable Pull-Down: MIC5503, MIC5504
• Thermal-Shutdown and Current-Limit Protection
• 4-Lead 1.0 mm x 1.0 mm Thin DFN Package
• MIC5501/4 5-Lead SOT23 Package

• Smartphones
• DSC, GPS, PMP, and PDAs
• Medical Devices
• Portable Electronics
• 5V Systems

The descriptions of the pins are listed in Table 3-1.

TABLE 3-1: PIN FUNCTION TABLE

Electrical Characteristics: V IN = V EN = V OUT + 1V; C IN = C OUT = 1 μF; I OUT = 100 μA; T J = +25°C, bold values indicate -40°C to +125°C, unless noted.

Supply Voltage (V IN ) .................................................................................................................................... -0.3V to +6V

Enable Voltage (V EN ) .................................................................................................................................... -0.3V to V IN

Power Dissipation (P D ) ............................................................................................................. Internally Limited, Note

1

ESD Rating (Note

1. ..................................................................................................................................................3

kV

The MIC5501/2/3/4 are designed to provide 300 mA of continuous current in a very small package. Maximum ambient operating temperature can be calculated based on the output current and the voltage drop across the part. For example if the input voltage is 3.6V, the output voltage is 2.8V, and the output current is 300 mA. The actual power dissipation of the regulator circuit can be determined using Equation 4-1: