MIC29750-3.3BWT [MICROCHIP]
Fixed Positive LDO Regulator, 3.3V, 0.75V Dropout, BIPolar, TO-247, 3 PIN;
| 型号： | MIC29750-3.3BWT |
| 厂家： | 
MICROCHIP |
| 描述： | Fixed Positive LDO Regulator, 3.3V, 0.75V Dropout, BIPolar, TO-247, 3 PIN 局域网 输出元件 调节器 |
| 文件： | 总40页 (文件大小：1927K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIC2915X/30X/50X/75X
High-Current Low Dropout Regulators
Features
General Description
• High Current Capability:
The MIC2915x/2930x/2950x/2975x are high current,
high accuracy, low dropout voltage regulators. Using
Microchip’s proprietary Super βeta PNP process with a
PNP pass element, these regulators feature 350 mV to
425 mV (full load) typical dropout voltages and very low
ground current. Designed for high current loads, these
devices also find applications in lower current,
extremely low dropout-critical systems, where their tiny
dropout voltage and ground current values are
important attributes.
- MIC29150/29151/29152/29153: 1.5A
- MIC29300/29301/29302/29303: 3A
- MIC29500/29501/29502/29503: 5A
- MIC29751/29752: 7.5A
• Low Dropout Voltage
• Low Ground Current
• Accurate 1% Guaranteed Tolerance
• Extremely Fast Transient Response
• Reverse-Battery and “Load Dump” Protection
• Zero-Current Shutdown Mode (5-Pin Versions)
The MIC2915x/2930x/2950x/2975x are fully protected
against overcurrent faults, reversed input polarity,
reversed lead insertion, overtemperature operation,
and positive and negative transient voltage spikes. Five
pin fixed-voltage versions feature logic level ON/OFF
control and an error flag that signals whenever the
output falls out of regulation. Flagged states include
low input voltage (dropout), output current limit,
overtemperature shutdown, and extremely high voltage
spikes on the input.
• Error Flag Signals Output Out-of-Regulation
(5-Pin Versions)
• Also Characterized for Smaller Loads with
Industry-Leading Performance Specifications
• Fixed-Voltage and Adjustable Versions
Applications
• Battery-Powered Equipment
• High-Efficiency Green Computer Systems
• Automotive Electronics
On the MIC29xx1 and MIC29xx2, the ENABLE pin may
be tied to VIN if it is not required for ON/OFF control.
The MIC2915x/2930x/2950x are available in 3-pin and
5-pin TO-220 and surface mount TO-263 (D2Pak)
packages. The MIC2975x 7.5A regulators are available
in a 5-pin TO-247 package. The 1.5A, adjustable output
MIC29152 is available in a 5-pin power D-Pak
(TO-252) package.
• High-Efficiency Linear Power Supplies
• High-Efficiency Post-Regulator for Switching
Supply
For applications with input voltage 6V or below, see
MIC37xxx LDOs.
Package Types
MIC29151/301/501/751
5-Lead TO-220 Fixed Voltage (T)
(Top View)
MIC29150/300/500
3-Lead TO-220 (T)
(Top View)
5
4
3
2
FLG
OUT
GND
IN
3
2
1
OUT
GND
IN
1
EN
2016 Microchip Technology Inc.
DS20005685A-page 1
MIC2915X/30X/50X/75X
Package Types (Continued)
MIC29153/303/503
5-Lead TO-220 Adjustable with Flag (T)
(Top View)
MIC29152/302/502
5-Lead TO-220 Adjustable Voltage (T)
(Top View)
5
4
3
2
ADJ
OUT
GND
IN
5
4
3
2
ADJ
OUT
GND
IN
1
EN
1
FLG
MIC29150/300
3-Lead TO-263 (D2Pak) (UT)
(Top View)
MIC29751
5-Lead TO-247 Fixed Voltage (WT)
(Top View)
5
4
3
2
1
FLG
OUT
GND
IN
3
2
1
OUT
GND
IN
EN
MIC29302/502
MIC29752
5-Lead TO-247 Adjustable Voltage (WT)
(Top View)
5-Lead TO-263 (D2Pak) Adj. Voltage (U)
(Top View)
5
4
3
2
1
ADJ
OUT
GND
IN
5
4
3
2
1
ADJ
OUT
GND
IN
EN
EN
MIC29152
MIC29151/301/501
5-Lead TO-263 (D2Pak) Fixed Voltage (U)
(Top View)
5-Lead TO-252 (D-Pak) Adjustable Voltage (D)
(Top View)
5
4
3
2
1
ADJ
OUT
GND
IN
5
4
3
2
1
FLG
OUT
GND
IN
EN
EN
MIC29153/303/503
5-Lead TO-263 (D2Pak) Adj. with Flag (U)
(Top View)
5
4
3
2
1
ADJ
OUT
GND
IN
FLG
DS20005685A-page 2
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
Typical Application Circuits
MIC29300
MIC29152
Fixed Output Version
Adjustable Output Version
MIC29300-3.3
OUT
IN
MIC29152WD
3.3VIN
5V
3.3V @ 3A
2.5V
@1.5A
OUT
IN
OUT
10μF Tantalum
CIN
*R1
+
ꢀꢁꢀȍ
CIN
10μF Tantalum
EN
ADJ
*R2
GND
GND
ꢀꢂꢃȍ
* See Minimum Load Current Section
Functional Diagram
IN
OUT
O.V.
I LIMIT
32V
R1*
1.240V
1.180V
REFERENCE
FLAG
EN
ADJ†
GND
THERMAL
SHUT-
DOWN
R2*
* FEEDBACK NETWORK IN FIXED VERSIONS ONLY
† ADJUSTABLE VERSION ONLY
2016 Microchip Technology Inc.
DS20005685A-page 3
MIC2915X/30X/50X/75X
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings † (Note 1)
Input Supply Voltage (VIN) (Note 1)............................................................................................................. –20V to +60V
Enable Input Voltage (VEN) ........................................................................................................................... –0.3V to VIN
Power Dissipation...................................................................................................................................Internally Limited
ESD Rating ............................................................................................................................................................ Note 2
Operating Ratings‡
Maximum Operating Input Voltage............................................................................................................................+26V
† Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at those or any other conditions above those indicated
in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended
periods may affect device reliability.
‡ Notice: The device is not guaranteed to function outside its operating ratings.
Note 1: Maximum positive supply voltage of 60V must be of limited duration (<100 ms) and duty cycle (≤1%). The
maximum continuous supply voltage is 26V. Exceeding the absolute maximum rating may damage the
device.
2: Devices are ESD sensitive. Handling precautions recommended.
DS20005685A-page 4
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
TABLE 1-1:
ELECTRICAL CHARACTERISTICS (Note 1, Note 2)
Electrical Characteristics: VIN = VOUT + 1V; IOUT = 10 mA; TJ = +25°C. Bold values indicate –40°C ≤ TJ ≤ +125°C,
unless noted.
Parameter
Symbol
Min.
Typ.
Max.
Units
Conditions
–1
—
1
IOUT = 10 mA
Output Voltage
VOUT
%
10 mA ≤ IOUT ≤ IFL, (VOUT + 1V) ≤ VIN
≤26V (Note 3)
–2
—
—
—
0.06
0.2
2
0.5
1
Line Regulation
Load Regulation
%
%
I
OUT = 10 mA, (VOUT + 1V) ≤ VIN ≤ 26V
IN = VOUT + 1V, 10 mA ≤ IOUT ≤ 1.5A
V
(Note 3, Note 4)
Output Voltage (Note 4)
Temperature Coefficient
∆VO/∆T
—
20
100
ppm/°C
—
—
—
—
—
—
—
—
—
—
—
—
80
200
—
MIC2915x IOUT = 100 mA
MIC2915x IOUT = 750 mA
MIC2915x IOUT = 1.5A
MIC2930x IOUT = 100 mA
MIC2930x IOUT = 1.5A
MIC2930x IOUT = 3A
220
350
80
600
175
—
250
370
125
250
370
80
600
250
—
Dropout Voltage
∆VOUT = –1% (Note 5)
mV
MIC2950x IOUT = 250 mA
MIC2950x IOUT = 2.5A
MIC2950x IOUT = 5A
600
200
—
MIC2975x IOUT = 250 mA
MIC2975x IOUT = 4A
270
425
750
MIC2975x IOUT = 7.5A
MIC2915x IOUT = 750 mA,
VIN = VOUT + 1V
—
—
—
—
—
—
—
8
22
10
37
15
70
35
120
0.9
20
—
35
—
50
—
75
—
—
MIC2915x IOUT = 1.5A
MIC2930x IOUT = 1.5A,
VIN = VOUT + 1V
MIC2930x IOUT = 3A
Ground Current (Note 6)
IGND
mA
MIC2950x IOUT = 2.5A,
VIN = VOUT + 1V
MIC2950x IOUT = 5A
MIC2975x IOUT = 4A,
VIN = VOUT + 1V
MIC2975x IOUT = 7.5A
MIC2915x, VIN = 0.5V less than
specified VOUT × IOUT = 10 mA
—
—
—
—
MIC2930x, VIN = 0.5V less than
specified VOUT × IOUT = 10 mA
1.7
2.1
3.1
—
—
—
Ground Pin Current at
Dropout
IGRNDDO
mA
MIC2950x, VIN = 0.5V less than
specified VOUT × IOUT = 10 mA
MIC2975x, VIN = 0.5V less than
specified VOUT × IOUT = 10 mA
—
—
—
—
2.1
4.5
7.5
9.5
3.5
5.0
MIC2915x, VOUT = 0V, (Note 7)
MIC2930x, VOUT = 0V, (Note 7)
MIC2950x, VOUT = 0V, (Note 7)
MIC2975x, VOUT = 0V, (Note 7)
Current Limit
ILIM
A
10.0
15.0
2016 Microchip Technology Inc.
DS20005685A-page 5
MIC2915X/30X/50X/75X
TABLE 1-1:
ELECTRICAL CHARACTERISTICS (Note 1, Note 2) (CONTINUED)
Electrical Characteristics: VIN = VOUT + 1V; IOUT = 10 mA; TJ = +25°C. Bold values indicate –40°C ≤ TJ ≤ +125°C,
unless noted.
Parameter
Symbol
Min.
Typ.
Max.
Units
Conditions
en, Output Noise Voltage
(10 Hz to 100 kHz)
IL = 100 mA
—
400
—
CL = 10 µF
CL = 33 µF
µVRMS
—
260
—
—
—
2
10
MIC29150/1/2/3 only
EN = 0.4V
Ground Current in
Shutdown
µA
—
30
V
Reference - MIC29xx2/MIC29xx3
1.228
1.215
1.203
—
1.240
—
1.252
1.265
1.277
80
V
VMAX
V
Reference Voltage
—
Reference Voltage
—
Note 8
—
40
Adjust Pin Bias Current
nA
—
—
120
Reference Voltage
Temperature Coefficient
—
—
20
—
—
ppm/°C Note 9
Adjust Pin Bias Current
Temperature Coefficient
0.1
nA/°C
—
Flag Output (Error Comparator) - MIC29xx1/29xx3
—
—
—
—
40
25
—
—
—
0.01
—
1.00
2.00
300
400
—
Output Leakage Current
Output Low Voltage
µA
mV
mV
VOH = 26V
220
—
Device set for 5V, VIN = 4.5V
IOL = 250 µA
VOL
60
—
Upper Threshold Voltage
Device set for 5V, (Note 10)
—
75
—
95
Lower Threshold Voltage
Hysteresis
mV
mV
Device set for 5V, (Note 10)
Device set for 5V, (Note 10)
140
—
15
DS20005685A-page 6
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
TABLE 1-1:
ELECTRICAL CHARACTERISTICS (Note 1, Note 2) (CONTINUED)
Electrical Characteristics: VIN = VOUT + 1V; IOUT = 10 mA; TJ = +25°C. Bold values indicate –40°C ≤ TJ ≤ +125°C,
unless noted.
Parameter
Symbol
Min.
Typ.
Max.
Units
Conditions
ENABLE Input - MIC29xx1/MIC29xx2
Input Logic Voltage Low
(OFF)
—
—
—
0.8
—
V
V
—
—
Input Logic Voltage High
(ON)
2.4
—
—
100
—
600
750
2
VEN = 26V
Enable Pin Input Current
µA
µA
0.7
—
—
VEN = 0.8V
—
4
Regulator Output Current
in Shutdown
—
10
500
VEN ≤ 0.8V and VIN ≤ 26V, VOUT = 0.
Note 1: Specification for packaged product only.
2: 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.
3: Full load current (IFL) is defined as 1.5A for the MIC2915x, 3A for the MIC2930x, 5A for the MIC2950x,
and 7.5A for the MIC2975x families.
4: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total
temperature range.
5: Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its
normal value with VOUT + 1V applied to VIN.
6: 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 current.
7: VIN = VOUT (nominal) + 1V. For example, use VIN = 4.3V for a 3.3V regulator or use 6V for a 5V regulator.
Employ pulse-testing procedures to pin current.
8: VREF ≤ VOUT ≤ (VIN – 1V), 2.3V ≤ VIN ≤ 26V, 10 mA < IL ≤ IFL, TJ ≤ TJMAX
.
9: Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipa-
tion is applied, excluding load or line regulation effects. Specifications are for a 200 mA load pulse at VIN
20V (a 4W pulse) for T = 10 ms.
=
10: Comparator thresholds are expressed in terms of a voltage differential at the adjust terminal below the
nominal reference voltage measured at 6V input. To express these thresholds in terms of output voltage
change, multiply by the error amplifier gain = VOUT/VREF = (R1 + R2)/R2. For example, at a programmed
output voltage of 5V, the error output is guaranteed to go low when the output drops by 95 mV x
5V/1.240V = 384 mV. Thresholds remain constant as a percent of VOUT as VOUT is varied, with the drop-
out warning occurring at typically 5% below nominal, 7.7% guaranteed.
2016 Microchip Technology Inc.
DS20005685A-page 7
MIC2915X/30X/50X/75X
TEMPERATURE SPECIFICATIONS (Note 1)
Parameters
Temperature Ranges
Sym.
Min.
Typ.
Max.
Units
Conditions
Storage Temperature Range
Operating Junction Temperature
Lead Temperature
TS
TJ
—
–65
–40
—
—
—
—
+150
+125
+260
°C
°C
°C
—
—
Soldering, 5 sec.
Package Thermal Resistance
Thermal Resistance TO-220
Thermal Resistance TO-263
Thermal Resistance TO-247
Thermal Resistance TO-252
Thermal Resistance TO-252
θJC
θJC
θJC
θJC
θJA
—
—
—
—
—
2
2
—
—
—
—
—
°C/W
°C/W
°C/W
°C/W
°C/W
—
—
—
—
—
1.5
3
56
Note 1: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable
junction temperature and the thermal resistance from junction to air (i.e., TA, TJ, JA). Exceeding the
maximum allowable power dissipation will cause the device operating junction temperature to exceed the
maximum +125°C rating. Sustained junction temperatures above +125°C can impact the device reliability.
DS20005685A-page 8
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
2.0
TYPICAL PERFORMANCE CURVES
Note: The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
FIGURE 2-4:
vs. Output Current.
MIC2915x Ground Current
FIGURE 2-1:
vs. Output Current.
MIC2915x Dropout Voltage
MIC2915x Dropout Voltage
MIC29150-5.0 Dropout
FIGURE 2-5:
vs. Supply Voltage.
MIC2915x Ground Current
FIGURE 2-2:
vs. Temperature.
FIGURE 2-6:
vs. Supply Voltage.
MIC2915x Ground Current
FIGURE 2-3:
Characteristics.
2016 Microchip Technology Inc.
DS20005685A-page 9
MIC2915X/30X/50X/75X
FIGURE 2-10:
Voltage vs. Temperature.
MIC29150-3.3 Output
FIGURE 2-7:
vs. Temperature.
MIC2915x Ground Current
MIC2915x Ground Current
MIC2915x Ground Current
FIGURE 2-11:
Current vs. Temperature.
MIC29150-3.3 Short-Circuit
FIGURE 2-8:
vs. Temperature.
FIGURE 2-12:
vs. Input Voltage.
MIC2915x Ground Current
FIGURE 2-9:
vs. Temperature.
DS20005685A-page 10
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
FIGURE 2-16:
Current vs. Temperature.
MIC29152/3 Adjust Pin
FIGURE 2-13:
Current vs. Temperature.
MIC29151-xx/2 Enable
FIGURE 2-17:
MIC2915x Line Transient.
FIGURE 2-14:
MIC2915x Load Transient.
FIGURE 2-18:
MIC2915x Line Transient.
FIGURE 2-15:
MIC2915x Load Transient.
2016 Microchip Technology Inc.
DS20005685A-page 11
MIC2915X/30X/50X/75X
FIGURE 2-22:
vs. Output Current.
MIC2930x Dropout Voltage
FIGURE 2-19:
Impedance vs. Frequency.
MIC2915x Output
FIGURE 2-23:
vs. Temperature.
MIC2930x Dropout Voltage
FIGURE 2-20:
vs. Temperature.
MIC29152 Ground Current
FIGURE 2-24:
Characteristics.
MIC29300-3.3 Dropout
FIGURE 2-21:
vs. Output Current.
MIC29152 Dropout Voltage
DS20005685A-page 12
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
FIGURE 2-28:
vs. Temperature.
MIC2930x Ground Current
FIGURE 2-25:
vs. Output Current.
MIC2930x Ground Current
MIC2930x Ground Current
MIC2930x Ground Current
FIGURE 2-29:
vs. Temperature.
MIC2930x Ground Current
FIGURE 2-26:
vs. Supply Voltage.
FIGURE 2-30:
vs. Temperature.
MIC2930x Ground Current
FIGURE 2-27:
vs. Supply Voltage.
2016 Microchip Technology Inc.
DS20005685A-page 13
MIC2915X/30X/50X/75X
FIGURE 2-34:
Current vs. Temperature.
MIC29301-xx/2 Enable
FIGURE 2-31:
Voltage vs. Temperature.
MIC29300-3.3 Output
FIGURE 2-35:
MIC2930x Load Transient.
FIGURE 2-32:
MIC29300-5.0 Short-Circuit
Current vs. Temperature.
FIGURE 2-36:
MIC2930x Load Transient.
FIGURE 2-33:
MIC2930x Ground Current
vs. Input Voltage.
DS20005685A-page 14
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
FIGURE 2-40:
Impedance vs. Frequency.
MIC2930x Output
FIGURE 2-37:
Current vs. Temperature.
MIC29302/3 Adjust Pin
FIGURE 2-41:
MIC2930x I
vs. V
–
IN
FIGURE 2-38:
MIC2930x Line Transient.
OUT
V
SOA (TO-263).
OUT
FIGURE 2-42:
MIC2930x I
vs. T SOA
OUT A
FIGURE 2-39:
MIC2930x Line Transient.
(TO-263).
2016 Microchip Technology Inc.
DS20005685A-page 15
MIC2915X/30X/50X/75X
FIGURE 2-46:
Characteristics.
MIC29500-3.3 Dropout
FIGURE 2-43:
SOA vs. Temperature (TO-263).
MIC2930x Short-Circuit
FIGURE 2-47:
vs. Output Current.
MIC2950x Ground Current
FIGURE 2-44:
vs. Output Current.
MIC2950x Dropout Voltage
FIGURE 2-48:
vs. Supply Voltage.
MIC2950x Ground Current
FIGURE 2-45:
vs. Temperature.
MIC2950x Dropout Voltage
DS20005685A-page 16
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
FIGURE 2-52:
vs. Temperature.
MIC2950x Ground Current
FIGURE 2-49:
vs. Supply Voltage.
MIC2950x Ground Current
MIC2950x Ground Current
MIC2950x Ground Current
FIGURE 2-53:
Voltage vs. Temperature.
MIC29500-3.3 Output
FIGURE 2-50:
vs. Temperature.
FIGURE 2-54:
Current vs. Temperature.
MIC2950x-5.0 Short-Circuit
FIGURE 2-51:
vs. Temperature.
2016 Microchip Technology Inc.
DS20005685A-page 17
MIC2915X/30X/50X/75X
FIGURE 2-58:
MIC2950x Load Transient.
FIGURE 2-55:
MIC2950x Ground Current
vs. Input Voltage.
FIGURE 2-59:
Current vs. Temperature.
MIC29502/3 Adjust Pin
FIGURE 2-56:
Current vs. Temperature.
MIC29501-xx/2 Enable
FIGURE 2-60:
MIC2950x Line Transient.
FIGURE 2-57:
MIC2950x Load Transient.
DS20005685A-page 18
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
FIGURE 2-64:
vs. Temperature.
MIC2975x Dropout Voltage
FIGURE 2-61:
MIC2950x Line Transient.
FIGURE 2-65:
MIC29751-3.3 Dropout
FIGURE 2-62:
MIC2950x Output
Characteristics.
Impedance vs. Frequency.
FIGURE 2-66:
MIC2975x Ground Current
FIGURE 2-63:
MIC2975x Dropout Voltage
vs. Output Current.
vs. Output Current.
2016 Microchip Technology Inc.
DS20005685A-page 19
MIC2915X/30X/50X/75X
FIGURE 2-70:
vs. Temperature.
MIC2975x Ground Current
MIC2975x Ground Current
MIC29751-3.3 Output
FIGURE 2-67:
vs. Supply Voltage.
MIC2975x Ground Current
MIC2975x Ground Current
MIC2975x Ground Current
FIGURE 2-71:
vs. Temperature.
FIGURE 2-68:
vs. Supply Voltage.
FIGURE 2-72:
Voltage vs. Temperature.
FIGURE 2-69:
vs. Temperature.
DS20005685A-page 20
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
FIGURE 2-76:
FIGURE 2-77:
FIGURE 2-78:
MIC2975x Load Transient.
MIC2975x Load Transient.
MIC29752 Adjust Pin
FIGURE 2-73:
Current vs. Temperature.
MIC29751-5.0 Short-Circuit
FIGURE 2-74:
vs. Input Voltage.
MIC2975x Ground Current
FIGURE 2-75:
Current vs. Temperature.
MIC29751-xx/2 Enable
Current vs. Temperature.
2016 Microchip Technology Inc.
DS20005685A-page 21
MIC2915X/30X/50X/75X
FIGURE 2-79:
FIGURE 2-80:
FIGURE 2-81:
MIC2975x Line Transient.
MIC2975x Line Transient.
MIC2975x Output
Impedance vs. Frequency.
DS20005685A-page 22
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1 and Table 3-2.
TABLE 3-1:
PIN FUNCTION TABLE
Pin Name
Pin Number
TO-220
Description
TO-263
1
2
3
INPUT
GND
Supplies the current to the output power device.
TAB is also connected internally to the IC’s ground on D-PAK.
The regulator output voltage.
OUTPUT
TABLE 3-2:
PIN FUNCTION TABLE
Pin Number
Pin Number
Adjustable
Adj. w/ Flag
TO-220
Pin Number
Fixed
TO-220
TO-247
TO-263
TO-220
Pin Name
Description
TO-247
TO-252
TO-247
TO-263
TO-263
1
1
—
ENABLE
CMOS compatible control input. Logic-high =
enable, logic-low = shutdown.
2
2
2
INPUT
GND
Supplies the current to the output power device.
3, TAB
3, TAB
3, TAB
TAB is also connected internally to the IC’s ground
on D-PAK.
4
4
5
4
5
OUTPUT
ADJUST
The regulator output voltage.
—
Adjustable regulator feedback input that connects
to the resistor voltage divider that is placed from
OUTPUT to GND in order to set the output voltage.
5
—
1
FLAG
Active-low error flag output signal that indicates an
output fault condition.
2016 Microchip Technology Inc.
DS20005685A-page 23
MIC2915X/30X/50X/75X
4.1
Thermal Design
4.0
APPLICATION INFORMATION
Linear regulators are simple to use. The most
complicated design parameters to consider are thermal
characteristics. Thermal design requires the following
application-specific parameters:
The MIC2915x, MIC2930x, MIC2950x, and MIC2975x
are high-performance low-dropout voltage regulators
suitable for all moderate to high-current voltage
regulator applications. Their 350 mV to 425 mV typical
dropout voltage at full load make them especially
valuable in battery powered systems and as high
efficiency noise filters in post-regulator applications.
Unlike older NPN-pass transistor designs, where the
minimum dropout voltage is limited by the base-emitter
voltage drop and collector-emitter saturation voltage,
dropout performance of the PNP output of these
devices is limited merely by the low VCE saturation
voltage.
• Maximum Ambient Temperature, TA
• Output Current, IOUT
• Output Voltage, VOUT
• Input Voltage, VIN
First, calculate the power dissipation of the regulator
from these numbers and the device parameters from
this data sheet.
EQUATION 4-1:
A trade-off for the low-dropout voltage is a varying base
driver requirement. But Microchip’s Super ßeta PNP
process reduces this drive requirement to merely 1% of
the load current.
PD = IOUT1.01VIN – VOUT
The MIC2915x/2930x/2950x/2975x family of regulators
are fully protected from damage due to fault conditions.
Current limiting is provided. This limiting is linear;
output current under overload conditions is constant.
Thermal shutdown disables the device when the die
temperature exceeds the +125°C maximum safe
operating temperature. Line transient protection allows
device and load survival even when the input voltage
spikes between –20V and +60V. When the input
voltage exceeds approximately 32V, the overvoltage
sensor disables the regulator. The output structure of
these regulators allows voltages in excess of the
desired output voltage to be applied without reverse
current flow. MIC29xx1 and MIC29xx2 versions offer a
logic-level ON/OFF control. When disabled, the
devices draw nearly zero current.
The ground current is approximated by 1% of IOUT
Then the heat sink thermal resistance is determined
with Equation 4-2.
.
EQUATION 4-2:
TJMAX – TA
SA = ---------------------------- – JC + CS
PD
Where:
TJMAX ≤ 125°C
An additional feature of this regulator family is a
common pinout. A design’s current requirement may
change up or down, but use the same board layout
because all of these regulators have identical pinouts.
θCS Between 0°C/W and 2°C/W
The heat sink may be significantly reduced in
applications where the minimum input voltage is known
and is large compared with the dropout voltage. Use a
series input resistor to drop excessive voltage and
distribute the heat between this resistor and the
regulator. The low-dropout properties of Super ßeta
PNP regulators allow very significant reductions in
regulator power dissipation and the associated heat
sink without compromising performance. When this
technique is employed, a capacitor of at least 0.1 µF is
needed directly between the input and regulator
ground.
MIC29xxx
VIN
VOUT
IN
OUT
GND
Please refer to Application Note 9 and Application Hint
17 for further details and examples on thermal design
and heat sink specification.
FIGURE 4-1:
Only Two Capacitors for Operation.
Linear Regulators Require
With no heat sink in the application, calculate the
junction temperature to determine the maximum power
dissipation that will be allowed before exceeding the
maximum junction temperature of the MIC29152. The
maximum power allowed can be calculated using the
DS20005685A-page 24
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
thermal resistance (θJA) of the D-Pak adhering to the
following criteria for the PCB design: 2 oz. copper and
100 mm2 copper area for the MIC29152.
This capacitor need not be an expensive low ESR type:
aluminum electrolytics are adequate. In fact, extremely
low ESR capacitors may contribute to instability.
Tantalum capacitors are recommended for systems
where fast load transient response is important.
For example, given an expected maximum ambient
temperature (TA) of +75°C with VIN = 3.3V, VOUT
=
2.5V, and IOUT = 1.5A, first calculate the expected PD
using Equation 4-3:
Where the regulator is powered from a source with high
AC impedance, a 0.1 µF capacitor connected between
Input and GND is recommended. This capacitor should
have good characteristics to above 250 kHz.
EQUATION 4-3:
4.3
Minimum Load Current
PD = 3.3V – 2.5V 1.5A – 3.3V 0.016A= 1.1472W
The MIC2915x–2975x regulators are specified
between finite loads. If the output current is too small,
leakage currents dominate and the output voltage
rises. The following minimum load current swamps any
expected leakage current across the operating
temperature range, as shown in Table 4-2.
Next, calculate the junction temperature for the
expected power dissipation.
TABLE 4-2:
Device
MINIMUM LOAD CURRENTS
Minimum Load
EQUATION 4-4:
MIC2915x
MIC2930x
MIC2950x
MIC2975x
5 mA
7 mA
TJ = JA PD + TA
= 56oC/W 1.1472W + 75oC = 139.24oC
10 mA
10 mA
Now determine the maximum power dissipation
allowed that would not exceed the IC’s maximum
junction temperature (+125°C) without the use of a
heat sink.
4.4
Adjustable Regulator Design
The adjustable regulator versions, MIC29xx2 and
MIC29xx3, allow programming the output voltage
anywhere between 1.25V and the 25V. Two resistors
are used. The resistor values are calculated by
Equation 4-6.
EQUATION 4-5:
PDMAX = TJMAX – TA JA
= 125oC – 75oC 56oC/W = 0.893W
EQUATION 4-6:
VOUT
4.2
Capacitor Requirements
R1 = R2 ------------- – 1
1.240
For stability and minimum output noise, a capacitor on
the regulator output is necessary. The value of this
capacitor is dependent upon the output current; lower
currents
allow
smaller
capacitors.
The
In the equation above, VOUT is the desired output
voltage. Figure 4-2 shows component definition.
Applications with widely varying load currents may
scale the resistors to draw the minimum load current
required for proper operation (see the Minimum Load
Current sub-section).
MIC2915x/2930x/2950x/2975x regulators are stable
with the following minimum capacitor values at full load,
as noted in Table 4-1.
TABLE 4-1:
MINIMUM CAPACITOR
VALUES AT FULL LOAD
Device
Full-Load Capacitor
MIC2915x
MIC2930x
MIC2950x
MIC2975x
10 µF
10 µF
10 µF
22 µF
2016 Microchip Technology Inc.
DS20005685A-page 25
MIC2915X/30X/50X/75X
MIC29152
V
IN
V
OUT
R1
R2
10μF
22μF
FIGURE 4-2:
Adjustable Regulator with
Resistors.
4.5
Error Flag
MIC29xx1 and MIC29xx3 versions feature an Error
Flag, which looks at the output voltage and signals an
error condition when this voltage drops 5% below its
expected value. The error flag is an open-collector
output that pulls low under fault conditions. It may sink
10 mA. Low output voltage signifies a number of
possible problems, including an overcurrent fault (the
device is in current-limit) and low input voltage. The flag
output is inoperative during overtemperature shutdown
conditions.
4.6
Enable Input
MIC29xx1 and MIC29xx2 versions feature an enable
(EN) input that allows ON/OFF control of the device.
Special design allows “zero” current drain when the
device is disabled; only microamperes of leakage
current flows. The EN input has TTL/CMOS compatible
thresholds for simple interfacing with logic, or may be
directly tied to ≤30V. Enabling the regulator requires
approximately 20 µA of current.
DS20005685A-page 26
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
5.0
5.1
PACKAGING INFORMATION
Package Marking Information
3- and 5-Pin TO-263 (Fixed)*
Example
XXXXXXXX
X.XXX
MIC29150
3.3WU
WNNNP
8943P
5-Pin TO-263 (Adjustable)*
Example
XXX
XXXXXXX
WNNNP
MIC
29152WU
6235P
3- and 5-Pin TO-220 (Fixed)*
Example
XXXXX
X.XXX
WNNNP
29301
5.0WT
1586P
5-Pin TO-220 (Adjustable)*
Example
XXX
XXXXXXX
WNNNP
MIC
29302WT
7404P
2016 Microchip Technology Inc.
DS20005685A-page 27
MIC2915X/30X/50X/75X
5-Pin TO-252*
Example
MIC
29152WD
3102P USA
XXX
XXXXXXX
WNNNP<BS1><COO>
5-Pin TO-247 (Fixed)*
Example
XXXXX
MICREL
XXXXXXXX-X.XXXX
WNNNP
MIC29751-3.3WWT
5943P
<COO>
USA
YYWWNNN
1642815
5-Pin TO-247 (Adjustable)*
Example
XXXXX
MICREL
XXXXXXXXXXX
WNNNP
MIC29752WWT
2359P
<COO>
USA
YYWWNNN
1521108
Legend: XX...X Product code or customer-specific information
Y
Year code (last digit of calendar year)
YY
Year code (last 2 digits of calendar year)
WW
NNN
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
Pb-free JEDEC® designator for Matte Tin (Sn)
This package is Pb-free. The Pb-free JEDEC designator (
can be found on the outer packaging for this package.
e
3
*
)
e
3
●, ▲, ▼ Pin one index is identified by a dot, delta up, or delta down (triangle
mark).
Note: In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for customer-specific information. Package may or may not include
the corporate logo.
Underbar (_) and/or Overbar (⎯) symbol may not be to scale.
DS20005685A-page 28
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
3-Lead TO-220 Package Outline and Recommended Land Pattern
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging.
2016 Microchip Technology Inc.
DS20005685A-page 29
MIC2915X/30X/50X/75X
5-Lead TO-220 Package Outline and Recommended Land Pattern
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging.
DS20005685A-page 30
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
5-Lead TO-263 Package Outline and Recommended Land Pattern
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging.
2016 Microchip Technology Inc.
DS20005685A-page 31
MIC2915X/30X/50X/75X
3-Lead TO-263 Package Outline and Recommended Land Pattern
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging.
DS20005685A-page 32
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
5-Lead TO-247 Package Outline and Recommended Land Pattern
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging.
2016 Microchip Technology Inc.
DS20005685A-page 33
MIC2915X/30X/50X/75X
5-Lead TO-252 Package Outline and Recommended Land Pattern
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging.
DS20005685A-page 34
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
APPENDIX A: REVISION HISTORY
Revision A (December 2016)
• Converted Micrel document MIC2915x/30x/50x/
75x to Microchip data sheet DS20005685A.
• Minor text changes throughout.
• Removed references to the discontinued
MIC29750.
• Added Figure 2-41, Figure 2-42, and Figure 2-43.
• Removed the 3-Pin TO-247 package option.
2016 Microchip Technology Inc.
DS20005685A-page 35
MIC2915X/30X/50X/75X
NOTES:
DS20005685A-page 36
2016 Microchip Technology Inc.
MIC2915X/30X/50X/75X
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, contact your local Microchip representative or sales office.
Examples:
–
PART NO.
Device
–
XX
X
XX
X
a) MIC29150-3.3WT:
1.5A High-Current Low-
Dropout Regulator, 3.3V,
–40°C to +125°C Temperature
Range, 3-Lead TO-220,
50/Tube
Media Type
Voltage
Junction
Temperature Range
Package
Device:
MIC2915x:
MIC2930x:
MIC2950x:
MIC2975x:
1.5A High-Current Low-Dropout Regulator
3A High-Current Low-Dropout Regulator
5A High-Current Low-Dropout Regulator
7.5A High-Current Low-Dropout Regulator
b) MIC29152WD-TR:
1.5A High-Current Low-
Dropout Regulator,
Adjustable Voltage,
–40°C to +125°C Temperature
Range, 5-Lead TO-252,
2,500/Reel
Voltage:
3.3
5.0
12
=
=
=
3.3V
5.0V
12V
c) MIC29302WU:
3A High-Current Low-
Dropout Regulator,
Adjustable Voltage,
–40°C to +125°C Temperature
Range, 5-Lead TO-263,
50/Tube
(blank) =
Adjustable
Junction
Temperature
Range:
W
=
–40°C to +125°C
d) MIC29301-12WU-TR: 3A High-Current Low-
Dropout Regulator, 12V,
Package:
U
T
D
WT
=
=
=
=
3-Lead or 5-Lead TO-263
3-Lead or 5-Lead TO-220
5-Lead TO-252
–40°C to +125°C Temperature
Range, 5-Lead TO-263,
5-Lead TO-247
750/Reel
e) MIC29500-5.0WT:
f) MIC29503WT:
5A High-Current Low-
Dropout Regulator, 5.0V,
–40°C to +125°C Temperature
Range, 3-Lead TO-220,
50/Tube
Media Type:
TR
TR
=
=
2,500/Reel for D and WT Packages
750/Reel for U Package
(blank)= 50/Tube for U, T, and D Packages
(blank)= 30/Tube for WT Package
5A High-Current Low-
Dropout Regulator,
Adjustable Voltage,
–40°C to +125°C Temperature
Range, 5-Lead TO-220,
50/Tube
g) MIC29751-3.3WWT-TR:7.5A High-Current Low-
Dropout Regulator, 3.3V,
–40°C to +125°C Temperature
Range, 5-Lead TO-247,
2,500/Reel
h) MIC29752WWT:
7.5A High-Current Low-
Dropout Regulator,
Adjustable Voltage,
–40°C to +125°C Temperature
Range, 5-Lead TO-247,
30/Tube
Note 1:
Tape and Reel identifier only appears in the
catalog part number description. This identifier is
used for ordering purposes and is not printed on
the device package. Check with your Microchip
Sales Office for package availability with the
Tape and Reel option.
2016 Microchip Technology Inc.
DS20005685A-page 37
MIC2915X/30X/50X/75X
NOTES:
DS20005685A-page 38
2016 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights unless otherwise stated.
Trademarks
The Microchip name and logo, the Microchip logo, AnyRate, AVR,
AVR logo, AVR Freaks, BeaconThings, BitCloud, CryptoMemory,
CryptoRF, dsPIC, FlashFlex, flexPWR, Heldo, JukeBlox, KEELOQ,
KEELOQ logo, Kleer, LANCheck, LINK MD, maXStylus,
maXTouch, MediaLB, megaAVR, MOST, MOST logo, MPLAB,
OptoLyzer, PIC, picoPower, PICSTART, PIC32 logo, Prochip
Designer, QTouch, RightTouch, SAM-BA, SpyNIC, SST, SST
Logo, SuperFlash, tinyAVR, UNI/O, and XMEGA are registered
trademarks of Microchip Technology Incorporated in the U.S.A.
and other countries.
ClockWorks, The Embedded Control Solutions Company,
EtherSynch, Hyper Speed Control, HyperLight Load, IntelliMOS,
mTouch, Precision Edge, and Quiet-Wire are registered
trademarks of Microchip Technology Incorporated in the U.S.A.
Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any
Capacitor, AnyIn, AnyOut, BodyCom, chipKIT, chipKIT logo,
CodeGuard, CryptoAuthentication, CryptoCompanion,
CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average
Matching, DAM, ECAN, EtherGREEN, In-Circuit Serial
Programming, ICSP, Inter-Chip Connectivity, JitterBlocker,
KleerNet, KleerNet logo, Mindi, MiWi, motorBench, MPASM, MPF,
MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach,
Omniscient Code Generation, PICDEM, PICDEM.net, PICkit,
PICtail, PureSilicon, QMatrix, RightTouch logo, REAL ICE, Ripple
Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI,
SuperSwitcher, SuperSwitcher II, Total Endurance, TSHARC,
USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and
ZENA are trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated in
the U.S.A.
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
Silicon Storage Technology is a registered trademark of Microchip
Technology Inc. in other countries.
GestIC is a registered trademark of Microchip Technology
Germany II GmbH & Co. KG, a subsidiary of Microchip Technology
Inc., in other countries.
All other trademarks mentioned herein are property of their
respective companies.
QUALITYꢀMANAGEMENTꢀꢀSYSTEMꢀ
CERTIFIEDꢀBYꢀDNVꢀ
© 2016, Microchip Technology Incorporated, All Rights Reserved.
ISBN: 978-1-5224-1236-6
== ISO/TSꢀ16949ꢀ==ꢀ
2016 Microchip Technology Inc.
DS20005685A-page 39
Worldwide Sales and Service
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DS20005685A-page 40
2016 Microchip Technology Inc.
11/07/16
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