MIC2954-07YM TR Micrel Inc, MIC2954-07YM TR Datasheet - Page 6

• Manufacturer Part Number: MIC2954-07YM TR
• Description: Improved LP2954 Low Drop-out Regulator ( )
• Manufacturer: Micrel Inc

Specifications of MIC2954-07YM TR

• Regulator Topology: Positive Fixed or Adjustable
• Voltage - Output: 5V, 1.24 ~ 29 V
• Voltage - Input: 2 ~ 30 V
• Voltage - Dropout (typical): 0.375V @ 250mA
• Number Of Regulators: 1
• Current - Output: 250mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MIC2954-07YMTR; MIC2954-07YMTR

Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended.
4. P
5. Thermal resistance (θ
6. Output voltage temperature coefficient is defined as the worst case voltage change divide by the total temperature range.
7. Line regulation for the MIC2954 is tested at 125°C for I
8. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Changes in output voltage due to heating effects are
9. Dropout Voltage is defined as the input to output differential at which the output voltage drops 100 mV below its nominal value measured at 1V
10. Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current plus the ground pin
11. The MIC2954 features fold-back current limiting. The short circuit (V
12. Thermal regulation is defined as the change in output voltage at a time t after a change in power dissipation is applied, excluding load or line
13. V
14. Comparator thresholds are expressed in terms of a voltage differential at the FB pin below the nominal reference voltage measured at 6Vinput. To
15. V
16. When used in dual supply systems where the regulator load is returned to a negative supply, the output voltage must be diode clamped to ground.
17. Maximum positive supply voltage of 60V must be of limited duration (<10ms) and duty cycle (<1%). The maximum continuous supply voltage is 30V.
Micrel, Inc.
September 2007
180°C/W with 0.4" leads and 160°C/W with 0.25" leads. Thermal resistance (θ
(See “Application Information: Thermal Calculation”).
See “Typical Characteristics” for line regulation versus temperature and load current.
covered by the thermal regulation specification.
differential. At very low values of programmed output voltage, the minimum input supply voltage of 2 V (2.3V over temperature) must be taken into
account.
current.
voltage.
regulation effects. Specifications are for a 200mA load pulse at V
express these thresholds in terms of output voltage change, multiply by the error amplifier gain = V
programmed output voltage of 5V, the error output is guaranteed to go low when the output drops by 95mV × 5V/1.235V = 384mV. Thresholds
remain constant as a percent of V
D(max)
SHDN
REF
≤ V
= (T
≥ 2V, V
OUT
J(max)
≤ (V
IN
– T
≤ 30 V,V
IN
A
– 1V), 2.3V ≤ V
) ÷ θ
JC
) of the TO-220 package is 2.5°C/W, and 15°C/W for the SOT-223. Thermal resistance (θ
JC
OUT
. Exceeding T
= 0, with the FB pin connected to TAP.
OUT
IN
≤ 30V, 100 µA < I
as V
J(max)
OUT
will cause thermal shutdown.
is varied, with the dropout warning occurring at typically 5% below nominal, 7.5% guaranteed.
L
L
≤ 250 mA, T
= 1mA. For I
IN
J
= 20V (a 4W pulse) for t = 10ms.
OUT
L
≤ T
= 100µA and T
J(max)
= 0V) current limit is less than the maximum current with normal output
6
.
JA
) of the SOP-8 is 160°C/W mounted on a printed circuit board
J
= 125°C, line regulation is guaranteed by design to0.2%.
OUT
/V
REF
= (R1 + R2)/R2. For example, at a
JC
) of the TO-92 package is
M9999-090607
MIC2954