MIC5383-SJGYMT-TR [MICROCHIP]
FIXED POSITIVE LDO REGULATOR;
| 型号： | MIC5383-SJGYMT-TR |
| 厂家： | 
MICROCHIP |
| 描述： | FIXED POSITIVE LDO REGULATOR 输出元件 调节器 |
| 文件： | 总22页 (文件大小：954K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIC5373/83
Triple 200mA µCap
LDO in 2.5mm x 2.5mm Thin MLF®
General Description
Features
The MIC5373/83 is a triple output device with three 200mA
LDOs which is ideal for application processor support in
mobile platforms. The MIC5373 provides independent
control active high enables for each of the 200mA LDOs.
The MIC5383 provides active low enables. Both the
MIC5373 and MIC5383 are available in the tiny 2.5mm x
2.5mm Thin MLF® package.
• 1.7V to 5.5V input supply voltage range
• Output current - 200mA LDO1/2/3
• High output accuracy (±2%)
• Independent enable pins
• POR with user-defined voltage monitoring
− POR voltage input
The MIC5373/83 is designed for high input ripple rejection
(high PSRR) and provides low output noise making it ideal
for powering sensitive RF circuitry such as GPS, WiFi and
Bluetooth applications. The MIC5373/83 also incorporates
a power-on-reset (POR) supervisor with adjustable delay
time set by an external capacitor, and an independent
input pin to monitor any voltage level. Once high, the POR
output can be asserted low again by enabling the manual
reset (MR) pin. When the MR pin is restored low, the POR
output will re-time the delay set by the external delay
capacitor.
− Adjustable delay time
− Manual reset pin
• Low dropout voltage – 170mV at 150mA
• High PSRR - 55dB at 1kHz on each LDO
• Stable with tiny ceramic output capacitors
• 2.5mm x 2.5mm Thin MLF16-pin package
• Thermal-shutdown and current-limit protection
Applications
• Mobile phones
• GPS receivers
• Application co-processors
• PDAs and handheld devices
The MIC5373/83 operates with very small ceramic output
capacitors to reduce board space and component cost. It
is available in various fixed output voltages. The
MIC5373/83 has a junction temperature range from −40°C
to 125°C.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Typical Application
Typical MIC5373-xxxYMT Circuit
(Active High Enable)
Typical MIC5383-xxxYMT Circuit
(Active Low Enable)
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
M9999-091712
September 2012
Micrel, Inc.
MIC5373/83
Ordering Information
Mark
Code
Output
Junction
Temperature Range
Part Number
Package
Lead Finish
Voltage(1)
MIC5373-MG4YMT
MIC5373-SJGYMT
MIC5383-MG4YMT
MIC5383-SJGYMT
MG4
SJG
Z1T
Z5T
2.8V/1.8V/1.2V
3.3V/2.5V/1.8V
2.8V/1.8V/1.2V
3.3V/2.5V/1.8V
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
16-Pin 2.5mm x 2.5mm Thin MLF
16-Pin 2.5mm x 2.5mm Thin MLF
16-Pin 2.5mm x 2.5mm Thin MLF
16-Pin 2.5mm x 2.5mm Thin MLF
Pb-free
Pb-free
Pb-free
Pb-free
Note:
1. Other voltage options available. Contact Micrel for details.
2. Lead finish is NiPdAu. Mold compound material is halogen free.
Pin Configuration
MIC5373
16-Pin 2.5mm x 2.5mm Thin MLF (MT)
(Top View)
MIC5383
16-Pin 2.5mm x 2.5mm Thin MLF (MT)
(Top View)
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September 2012
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Micrel, Inc.
MIC5373/83
Pin Description
Pin Number
Pin Name
Pin Function
1
2
3
4
OUT1
INLDO1/2
OUT2
Regulator Output - LDO1.
Supply Input (LDO1/2).
Regulator Output – LDO2.
BIAS
Internal Bias Supply Voltage. Must be de-coupled to ground with a 0.1µF capacitor.
Input to POR. Connect directly to output voltage or input voltage that is to be monitored for a 0.9V
reference, or connect a resistor divider network to this pin to program the POR monitoring voltage.
5
POR_IN
6
7
POR
DLY
Power-on Reset Output. Open drain.
POR Delay. Connect capacitor to ground to set POR delay time.
Manual Reset Input. Manually resets output of POR and delay generator. Do not leave floating.
Not internally connected.
8
MR
9
NC
10
11
12
13
NC
Not internally connected.
INLDO3
OUT3
GND
Supply Input (LDO3).
Regulator Output – LDO3.
Ground.
LDO3 Enable Input. EN (MIC5373): Active High Input. Logic High = On; Logic Low = Off;
/EN (MIC5383): Active Low Input. Logic High = Off; Logic Low = On; Do not leave floating.
LDO2 Enable Input. EN (MIC5373): Active High Input. Logic High = On; Logic Low = Off;
/EN (MIC5383): Active Low Input. Logic High = Off; Logic Low = On; Do not leave floating.
LDO1 Enable Input. EN (MIC5373): Active High Input. Logic High = On; Logic Low = Off;
/EN (MIC5383): Active Low Input. Logic High = Off; Logic Low = On; Do not leave floating.
Exposed Heat Sink Pad. Connect to GND.
14
15
EN3 or /EN3
EN2 or /EN2
16
EN1 or /EN1
EPAD
HS Pad
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September 2012
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Micrel, Inc.
MIC5373/83
Absolute Maximum Ratings(1)
Operating Ratings(4)
Supply Voltage(5) (VINLDO1/2, INLDO3)..................+1.7V to VBIAS
Bias Supply Voltage (VBIAS).......................... +2.5V to +5.5V
Enable Input Voltage (VEN1, EN2, EN3)..................... 0V to VBIAS
POR Output Voltage (POR).............................. 0V to +5.5V
POR Input Voltage (POR_IN) ............................. 0V to VBIAS
MR Voltage (MR) ................................................ 0V to VBIAS
DLY Voltage (DLY).............................................. 0V to VBIAS
Junction Temperature (TJ) ........................–40°C to +125°C
Junction Thermal Resistance
Supply Voltage (VINLDO1/2, INLDO3)...................... −0.3V to +6V
Bias Supply Voltage (VBIAS)............................. −0.3V to +6V
Enable Input Voltage (VEN1, EN2, EN3)................. −0.3V to +6V
POR Output Voltage (POR) ............................ −0.3V to +6V
POR Input Voltage (POR_IN) ......................... −0.3V to +6V
MR Voltage (MR) ............................................ −0.3V to +6V
DLY Voltage (DLY).......................................... −0.3V to +6V
Power Dissipation ..................................Internally Limited(2)
Lead Temperature (soldering, 10s)............................ 260°C
Storage Temperature (Ts) .........................–60°C to +150°C
ESD Rating(3)................................................. ESD Sensitive
2.5mm x 2.5mm Thin MLF-16L (θJA) ...............100°C/W
Electrical Characteristics(6)
(MIC5373) VIN = VOUT + 1V (VOUT is highest of the three regulator outputs); VBIAS = VEN1 = VEN2 = VEN3 = 5.5V (ON);
(MIC5383) VIN = VOUT + 1V (VOUT is highest of the three regulator outputs); VBIAS = 5.5V; V/EN1 = V/EN2 = V/EN3 = GND (ON);
IOUT1 = IOUT2 = IOUT3 = 100µA; COUT1 = COUT2 = COUT3 = 1µF; TA = 25°C, Bold values indicate –40°C ≤ TJ ≤ +125°C, unless noted.
Parameter
Conditions
Min.
−2.0
−3.0
Typ.
Max.
+2.0
+3.0
0.3
1
Units
Variation from nominal VOUT1, 2, 3
Variation from nominal VOUT1, 2, 3
VIN = VOUT +1V to 5.5V; IOUT = 100µA
IOUT = 100µA to 150mA;
Output Voltage Accuracy
%
Line Regulation
Load Regulation
0.02
0.3
60
%/V
%
IOUT = 50mA; VOUT ≥ 2.8V
IOUT = 150mA; VOUT ≥ 2.8V
IOUT = 50mA; VOUT < 2.8V
115
330
145
450
20
170
85
Dropout Voltage
mV
I
OUT = 150mA; VOUT < 2.8V
275
10
Input Ground Current
Bias Ground Current
EN1 or EN2 or EN3 = ON; Not including IBIAS
EN1 or EN2 or EN3 = ON
EN1 = EN2 = EN3 = ON
EN1 = EN2 = EN3 = OFF
EN1 = EN2 = EN3 = OFF
f = 1kHz; COUT = 1.0µF
µA
µA
32
70
103
0.04
0.02
55
160
2
Shutdown Ground Current
Shutdown Bias Current
Ripple Rejection
µA
µA
2
dB
Current Limit
VOUT = 0V
200
1.2
350
200
700
mA
Output Voltage Noise
COUT =1µF,10Hz to 100kHz; IOUT = 150mA
(MIC5373) LDO OFF; (MIC5383) LDO ON
(MIC5373) LDO ON; (MIC5383) LDO OFF
VIL ≤ 0.2V
µVRMS
0.2
Enable Input Voltage
Enable Input Current
V
0.01
0.01
80
µA
VIH ≥ 1.2V
Turn-On Time
VPOR
COUT = 1µF
200
0.2
µs
V
POR Output Low Voltage
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = (TJ(max) – TA) / θJA. Exceeding the maximum allowable power
dissipation will result in excessive die temperature and the regulator will go into thermal shutdown.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
4. The device is not guaranteed to function outside its operating rating.
5. For VIN range of 1.7V to 2.5V, output current is limited to 30mA.
6. Specification for packaged product only.
M9999-091712
September 2012
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Micrel, Inc.
MIC5373/83
Electrical Characteristics(6)
(MIC5373) VIN = VOUT + 1V (VOUT is highest of the three regulator outputs); VBIAS = VEN1 = VEN2 = VEN3 = 5.5V (ON);
(MIC5383) VIN = VOUT + 1V (VOUT is highest of the three regulator outputs); VBIAS = 5.5V; V/EN1 = V/EN2 = V/EN3 = GND (ON);
IOUT1 = IOUT2 = IOUT3 = 100µA; COUT1 = COUT2 = COUT3 = 1µF; TA = 25°C, Bold values indicate –40°C ≤ TJ ≤ +125°C, unless noted.
Parameter
Conditions
Min.
0.75
1.13
Typ.
1.25
1.25
1
Max.
2
Units
µA
V
DLY Pin Current Source
VDLY = 0V
DLY Pin Voltage Threshold
1.38
IPOR
POR Output Leakage Current, VPOR OFF
POR Undervoltage Threshold
POR Hysteresis
µA
V
VTH
0.873
0.9
34
0.927
VHYS
mV
µA
°C
IPOR_IN
POR Input Pin Leakage Current
1
Thermal Shutdown
Thermal-Shutdown Hysteresis
155
10
°C
M9999-091712
September 2012
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Micrel, Inc.
MIC5373/83
Typical Characteristics
LDO1 Output Voltage
vs. Input Voltage
LDO1 Output Voltage
vs. Input Voltage
LDO1 Output Voltage
vs. Input Voltage
3.40
3.40
3.30
3.20
3.10
3.00
2.90
2.80
2.70
2.60
2.50
3.40
3.30
3.20
3.10
3.00
2.90
2.80
2.70
2.60
2.50
3.30
3.20
3.10
IOUT = 50mA
IOUT = 150mA
IOUT = 100µA
3.00
2.90
2.80
VBIAS = V
VBIAS = V
VBIAS = V
IN1/2
IN1/2
IN1/2
2.70
VOUT_NOM = 3.3V
OUT = 1.0µF
VOUT_NOM = 3.3V
VOUT_NOM = 3.3V
OUT = 1.0µF
2.60
C
COUT = 1.0µF
C
2.50
2.5
3
3.5
4
4.5
5
5.5
2.5
3
3.5
4
4.5
5
5.5
2.5
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
LDO2 Output Voltage
vs. Input Voltage
LDO2 Output Voltage
vs. Input Voltage
LDO2 Output Voltage
vs. Input Voltage
2.60
2.55
2.50
2.45
2.40
2.35
2.30
2.25
2.20
2.60
2.55
2.50
2.45
2.40
2.35
2.30
2.25
2.20
2.60
2.55
2.50
2.45
2.40
2.35
2.30
2.25
2.20
IOUT = 100µA
IOUT = 50mA
IOUT = 150mA
VBIAS = V
VBIAS = V
IN
VBIAS = V
IN
IN
VOUT_NOM = 2.5V
OUT = 1.0µF
VOUT_NOM = 2.5V
COUT = 1.0µF
VOUT_NOM = 2.5V
OUT = 1.0µF
C
C
2.5
3
3.5
4
4.5
5
5.5
2.5
3
3.5
4
4.5
5
5.5
2.5
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
LDO3 Output Voltage
vs. Input Voltage
LDO3 Output Voltage
vs. Input Voltage
LDO3 Output Voltage
vs. Input Voltage
1.90
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
1.90
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
1.90
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
IOUT = 150mA
A
IOUT = 50mA
IOUT = 100µ
VBIAS = 5.5V
VOUT_NOM = 1.8V
OUT = 1.0µF
VBIAS = 5.5V
OUT_NOM = 1.8V
COUT = 1.0µF
VBIAS = 5.5V
OUT_NOM = 1.8V
OUT = 1.0µF
V
V
C
C
1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2 5.7
1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2 5.7
1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2 5.7
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
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September 2012
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Micrel, Inc.
MIC5373/83
Typical Characteristics (Continued)
LDO1 Output Voltage
vs. Output Current
LDO1 Output Voltage
vs. Output Current
LDO1 Output Voltage
vs. Output Current
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
VIN = 3.6V
VIN = 4.2V
VIN = 5.5V
VBIAS = V
VBIAS = V
IN1/2
VBIAS = V
IN1/2
IN1/2
VOUT_NOM = 3.3V
COUT = 1.0µF
VOUT_NOM = 3.3V
OUT = 1.0µF
VOUT_NOM = 3.3V
COUT = 1.0µF
C
0
20 40 60 80 100 120 140 160 180 200
0
20 40 60 80 100 120 140 160 180 200
0
20 40 60 80 100 120 140 160 180 200
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
LDO2 Output Voltage
vs. Output Current
LDO2 Output Voltage
vs. Output Current
LDO2 Output Voltage
vs. Output Current
2.60
2.58
2.56
2.54
2.52
2.50
2.48
2.46
2.44
2.42
2.40
2.60
2.58
2.56
2.54
2.52
2.50
2.48
2.46
2.44
2.42
2.40
2.60
2.58
2.56
2.54
2.52
2.50
2.48
2.46
2.44
2.42
2.40
VIN = 3.6V
VIN = 3.0V
VIN = 5.5V
VBIAS = V
VBIAS = V
IN1/2
VBIAS = V
IN1/2
IN1/2
VOUT_NOM = 2.5V
COUT = 1.0µF
VOUT_NOM = 2.5V
COUT = 1.0µF
VOUT_NOM = 2.5V
COUT = 1.0µF
0
50
100
150
200
0
50
100
150
200
0
50
100
150
200
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
LDO3 Output Voltage
vs. Output Current
LDO3 Output Voltage
vs. Output Current
LDO3 Output Voltage
vs. Output Current
1.90
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
1.70
1.90
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
1.70
1.90
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
1.70
VIN = 2.5V
VIN = 3.6V
VIN = 5.5V
VBIAS = V
VBIAS = V
VBIAS = V
IN3
IN3
IN3
VOUT_NOM = 1.8V
VOUT_NOM = 1.8V
VOUT_NOM = 1.8V
COUT = 1.0µF
C
OUT = 1.0µF
C
OUT = 1.0µF
0
50
100
150
200
0
50
100
150
200
0
50
100
150
200
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
M9999-091712
September 2012
7
Micrel, Inc.
MIC5373/83
Typical Characteristics (Continued)
LDO1 Output Voltage
vs. Temperature
LDO2 Output Voltage
vs. Temperature
LDO3 Output Voltage
vs. Temperature
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
2.60
2.58
2.56
2.54
2.52
2.50
2.48
2.46
2.44
2.42
2.40
1.90
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
1.70
IOUT = 100µA
IOUT = 100µA
IOUT = 50mA
IOUT = 100µA
IOUT = 50mA
IOUT = 50mA
VOUT_NOM = 3.3V
COUT = 1.0µF
IOUT = 150mA
VOUT_NOM = 2.5V
COUT = 1.0µF
VOUT_NOM = 1.8V
COUT = 1.0µF
IOUT = 150mA
IOUT = 150mA
-40 -20
0
20 40 60 80 100 120
-40 -20
0
20 40 60 80 100 120
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
LDO1 Current Limit
vs. Input Voltage
LDO2 Current Limit
vs. Input Voltage
LDO3 Current Limit
vs. Input Voltage
600
550
500
450
400
350
300
250
200
150
100
50
600
550
500
450
400
350
300
250
200
150
100
50
600
550
500
450
400
350
300
250
200
150
100
50
VBIAS = V
VBIAS = V
IN3
IN1/2
VBIAS = V
IN1/2
VOUT_NOM = 1.8V
OUT = 1µF
VOUT_NOM = 3.3V
OUT = 1µF
VOUT_NOM = 2.5V
OUT = 1µF
C
C
C
0
0
0
2.5
3
3.5
4
4.5
5
5.5
2.5
3
3.5
4
4.5
5
5.5
2.5
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
LDO1/2/3 Current Limit
vs. Temperature
LDO1 Dropout Voltage
vs. Temperature
LDO2 Dropout Voltage
vs. Temperature
500
450
400
350
300
250
200
150
100
50
200
180
160
140
120
100
80
240
200
160
120
80
IOUT = 150mA
IOUT = 150mA
VBIAS = 4.3V
VOUT_NOM = 2.5V
COUT = 1µF
VBIAS = 4.3V
VOUT_NOM = 3.3V
C
OUT = 1µF
IOUT = 50mA
IOUT = 50mA
60
VBIAS = VIN = 4.3V
VOUT_NOM = 3.3V
COUT = 1µF
40
40
20
0
0
0
-40 -20
0
20 40 60 80 100 120
-40 -20
0
20 40 60 80 100 120
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
M9999-091712
September 2012
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Micrel, Inc.
MIC5373/83
Typical Characteristics (Continued)
LDO3 Dropout Voltage
LDO1/2/3 Total Ground
LDO1/2/3 Total Ground
Current vs. Output Current
vs. Temperature
Current vs. Input Voltage
40
35
30
25
20
15
10
5
40
35
30
25
20
15
10
5
320
IOUT = 150mA
280
240
200
160
120
80
VBIAS = 4.3V
OUT_NOM = 1.8V
OUT = 1µF
V
IOUT = 50mA
C
VBIAS = VIN1/2 = V
IN3
EN1 or EN2 or EN3 = ON
Including IBIAS
VIN = VBIAS = 3.6V
40
EN1 or EN2 or EN3 = ON
No Load
0
0
0
0
25
50
75
100
125
150
-40 -20
0
20 40 60 80 100 120
2.5
3
3.5
4
4.5
5
5.5
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
INPUT VOLTAGE (V)
LDO1/2/3 Input Ground
Current vs. Output Current
LDO1/2/3 Input Ground
Current vs. Input Voltage
LDO1/2/3 Input Ground
Current vs. Temperature
20
18
16
14
12
10
8
20
18
16
14
12
10
8
20
18
16
14
12
10
8
VBIAS = 5.5V
EN1 or EN2 or EN3 = ON
No Load
6
6
6
VBIAS = 5.5V
VBIAS = 5.5V
4
4
4
VIN = VOUT + 1V
EN1 or EN2 or EN3 = ON
No Load
2
EN1 or EN2 or EN3= ON
2
2
0
0
0
0
25
50
75
100
125
150
2.5
3
3.5
4
4.5
5
5.5
-40 -20
0
20 40 60 80 100 120
OUTPUT CURRENT (mA)
INPUT VOLTAGE (V)
TEMPERATURE (°C)
LDO1/2/3 Bias Ground
Current vs. Output Current
LDO1/2/3 Bias Ground
Current vs. Temperature
LDO1 Output Noise
Spectral Density
50
45
40
35
30
25
20
15
10
5
50
45
40
35
30
25
20
15
10
5
10
1
Noise (10Hz- 100kHz) = 200µVrms
0.1
V
IN = 3.8V
V
OUT = 2.8V
VBIAS = 5.5V
VBIAS = 5.5V
IN = VOUT + 1V
EN1 or EN2 or EN3= ON
C
OUT = 1µF
0.01
0.001
V
IN = VOUT + 1V
V
C
BIAS = 0.1µF
EN1 or EN2 or EN3= ON
Load = 150mA
0
0
0
20 40 60 80 100 120 140 160 180 200
-40 -20
0
20 40 60 80 100 120
10
100
1,000
10,000
100,000
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
FREQUENCY (Hz)
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September 2012
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Micrel, Inc.
MIC5373/83
Typical Characteristics (Continued)
LDO2 Output Noise
Spectral Density
LDO2 Output Noise
Spectral Density
LDO3 Output Noise
Spectral Density
10
10
1
10
1
Noise (10Hz - 100kHz) = 144µVrms
Noise (10Hz - 100kHz) = 160µVrms
Noise (10Hz - 100kHz) = 125µVrms
1
0.1
0.1
V
IN = 4.0V
V
IN = 4.3V
V
IN = 4.0V
VOUT = 1.8V
COUT = 1µF
V
OUT = 1.2V
VOUT = 1.8V
0.1
0.01
0.01
0.001
C
OUT = 1µF
C
OUT = 1µF
CBIAS = 0.1µF
Load = 150mA
C
BIAS = 0.1µF
CBIAS = 0.1µF
Load = 100µA
Load = 100µA
0.01
10
100
1,000
10,000
100,000
10
100
1,000
10,000
100,000
10
100
1,000
10,000
100,000
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
LDO3 Output Noise
Spectral Density
LDO1 PSRR (IOUT = 150mA)
LDO1 PSRR (IOUT = 100µA)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
Noise (10Hz - 100kHz) = 105µVrms
1
0.1
`
`
V
IN = 3.9V
V
OUT = 1.2V
0.01
0.001
C
OUT=1µF
VIN = 4.3V
VIN = 4.3V
C
BIAS = 0.1µF
VOUT = 3.3V
COUT = 1µF
VOUT = 3.3V
COUT = 1µF
Load = 150mA
10
100
1,000
10,000
100,000
10
100
1000
10000
100000 1000000
10
100
1000
10000
100000 1000000
FREQUENCY (Hz)
FREQUENCY(Hz)
FREQUENCY(Hz)
LDO2 PSRR (IOUT = 100µA)
LDO3 PSRR (IOUT = 100µA)
LDO2 PSRR (IOUT = 150mA)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
`
`
V
IN = 3.6V
V
IN = 3.6V
VIN = 3.6V
VOUT = 1.8V
COUT = 1µF
VOUT = 2.5V
VOUT = 2.5V
COUT = 1µF
COUT = 1µF
10
100
1000
10000 100000 1000000
10
100
1000
10000
100000 1000000
10
100
1000
10000
100000 1000000
FREQUENCY(Hz)
FREQUENCY (Hz)
FREQUENCY(Hz)
M9999-091712
September 2012
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Micrel, Inc.
MIC5373/83
Typical Characteristics (Continued)
LDO3 PSRR (IOUT = 150mA)
-100
-90
-80
-70
-60
`
-50
-40
-30
VIN = 3.3V
-20
VOUT = 1.8V
-10
0
COUT = 1µF
10
100
1000
10000
100000 1000000
FREQUENCY(Hz)
M9999-091712
September 2012
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Micrel, Inc.
MIC5373/83
Functional Characteristics
M9999-091712
September 2012
12
Micrel, Inc.
MIC5373/83
Functional Characteristics (Continued)
M9999-091712
September 2012
13
Micrel, Inc.
MIC5373/83
Functional Characteristics (Continued)
M9999-091712
September 2012
14
Micrel, Inc.
MIC5373/83
Functional Diagram
MIC5373 Block Diagram (Active High Enable)
MIC5383 Block Diagram (Active Low Enable)
M9999-091712
September 2012
15
Micrel, Inc.
MIC5373/83
Pin Descriptions
INLDO
A delay can be added by placing a capacitor from the
DLY pin to ground.
The LDO input pins INLDO1/2 and INLDO3 provide the
input power to the linear regulators LDO1, LDO2 and
LDO3. The input operating voltage range is from 1.7V to
5.5V. For input voltages from 1.7V to 2.5V the output
current must be limited to 30mA each. Due to line
inductance a 1µF capacitor placed close to the INLDO
pins and the GND pin is recommended. Please refer to
layout recommendations.
POR_IN
The power-on-reset input (POR_IN) pin compares any
voltage to an internal 0.9V reference. This function can
be used to monitor any of the LDO outputs or any
external voltage rail. When the monitored voltage is
greater than 0.9V, the POR_IN flag will internally trigger
a 1.25µA source current to charge the external capacitor
at the DLY pin. A resistor divider network may be used
to divide down the monitored voltage to be compared
with the 0.9V at the POR_IN. This resistor network can
change the trigger point to any voltage level. A small
decoupling capacitor is recommended between POR_IN
and ground to reject high frequency noise that might
interfere with the POR circuit. Do not leave the POR_IN
pin floating.
BIAS
The BIAS pin provides power to the internal reference
and control sections of the MIC5373/83. A 0.1µF
ceramic capacitor must be connected from BIAS to GND
for clean operation.
EN (MIC5373)
The enable (EN) pins EN1, EN2 and EN3 provide logic
level control for the outputs OUT1, OUT2 and OUT3,
respectively. A logic high signal on an enable pin
activates the respective LDO. A logic low signal on an
enable pin deactivates the respective LDO. Do not leave
the EN pins floating, as it would leave the regulator in an
unknown state.
DLY
The delay (DLY) pin is used to set the POR delay time.
Adding a capacitor to this pin adjusts the delay of the
POR signal. When the POR_IN flag is triggered, a
constant 1.25µA current begins to charge the external
capacitor tied to the DLY pin. When the capacitor
reaches 1.25V the POR will be pulled high by the
external pull up resistor. Equation 1 illustrates how to
calculate the charge time is shown:
/EN (MIC5383)
The enable (EN) pins /EN1, /EN2 and /EN3 provide logic
level control for the outputs OUT1, OUT2 and OUT3,
respectively. A logic high signal on an enable pin
deactivates the respective LDO. A logic low signal on an
enable pin activates the respective LDO. Do not leave
the EN pins floating, as it would leave the regulator in an
unknown state.
⎛
⎞
1.25V x C
DLY
−6
⎜
⎜
⎟
⎟
t
(s) =
Eq. 1
DELAY
1.25x10
⎝
⎠
The delay time (t) is in seconds, the delay voltage is
1.25V internally, and the external delay capacitance
(CDLY) is in microfarads. For a 1µF delay capacitor, the
delay time will be 1 second. A capacitor at the DLY pin is
recommended when the POR function is used in order to
prevent unexpected triggering of the POR signal in noisy
systems.
OUT
OUT1, OUT2 and OUT3 are the output pins of each
LDO. A minimum of 1µF capacitor be placed as close as
possible to each of the OUT pins. A minimum voltage
rating of 6.3V is recommended for each capacitor.
GND
The ground (GND) pin is the ground path for the control
circuitry and the power ground for all LDOs. The current
loop for the ground should be kept as short as possible.
Refer to the layout recommendations for more details.
MR
The manual reset (MR) pin resets the output of POR and
DLY generator regardless if the monitored voltage is in
regulation or not. Applying a voltage greater than 1.2V
on the MR pin will cause the POR voltage to be pulled
low. When a voltage below 0.2V is applied to the MR
pin, the internal 1.25µA will begin to charge the DLY pin
until it reaches 1.25V. When the DLY pin reaches
1.25V, the POR voltage will be pulled high by the pull up
external resistor again. Do not leave the MR pin floating.
POR
The power-on-reset (POR) pin is an open drain output. A
resistor (10kΩ to 100kΩ) can be used for a pull up to
either the input or the output voltage of the regulator.
POR is asserted high when the voltage at DLY reaches
1.25V.
M9999-091712
September 2012
16
Micrel, Inc.
MIC5373/83
Application Information
Thermal Considerations
MIC5373/83 is a triple output device with three 200mA
LDOs. The MIC5373/83 incorporates a POR function
with the capability to monitor any voltage using POR_IN.
The monitored voltage can be set to any voltage
threshold level to trigger the POR flag. A delay on the
POR flag may also be set with an external capacitor at
the DLY pin. All the LDOs have current limit and thermal
shutdown protection to prevent damage from fault
conditions. MIC5373 has active high enables while the
MIC5383 has active low enables.
The MIC5373/83 is designed to provide three outputs up
to 200mA each 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
voltages are 3.6V and the output voltages are 3.3V,
2.5V, and 1.8V each with an output current = 150mA.
The actual power dissipation of the regulator circuit can
be determined using Equation 2:
Input Capacitor
PD = (VINLDO1/2 – VOUT1) I OUT1
(VINLDO1/2 – VOUT2) I OUT2
+
The MIC5373/83 is a high-performance, high-bandwidth
device. An input capacitor of 1µF from the input pin to
ground is required to provide stability. Low-ESR ceramic
capacitors provide optimal performance in small board
area. Additional high-frequency capacitors, such as
small valued NPO dielectric type capacitors, help filter
out high-frequency noise and are good practice in any
RF-based circuit. X5R or X7R dielectrics are
recommended for the input capacitor. Y5V dielectrics
lose most of their capacitance over temperature and are
therefore not recommended.
+
(VINLDO3 – VOUT3) I OUT3 + VIN x IGND
Eq. 2
As the MIC5373/83 is a CMOS device, the ground current
is typically <100µA over the load range, the power
dissipation contributed by the ground current is <1% and
may be ignored for this calculation, as illustrated in
Equation 3:
PD ≈ (3.6V – 2.8V)150mA+(3.6V-1.8V)150mA+
Output Capacitor
(3.6V-1.2V)150mA
The MIC5373/83 requires an output capacitor of 1µF or
greater to maintain stability. The design is optimized for
use with low-ESR ceramic chip capacitors. High-ESR
capacitors may cause high-frequency oscillation. The
output capacitor can be increased, but performance has
been optimized for a 1µF ceramic output capacitor and
does not improve significantly with larger capacitance.
PD ≈ 0.75W
Eq. 3
To determine the maximum ambient operating
temperature of the package, use the junction to ambient
thermal resistance of the device and Equation 4:
X7R and X5R dielectric ceramic capacitors are
T
− TA
⎛
⎜
⎜
⎝
⎞
⎟
⎟
⎠
J(MAX)
recommended
because
of
their
temperature
PD(MAX)
=
Eq. 4
performance. X7R capacitors change capacitance by
15% over their operating temperature range and are the
most stable type of ceramic capacitors. Z5U and Y5V
dielectric capacitors change value by as much as 50%
and 60% respectively over their operating temperature
ranges. To use a ceramic chip capacitor with Y5V
dielectric the value must be much higher than an X7R
ceramic capacitor to ensure the same minimum
capacitance over the equivalent operating temperature
range.
θJA
TJ(MAX) = 125°C
θ
JA = 100°C/W
Substituting PD for PD(max) and solving for the ambient
operating temperature will give the maximum operating
conditions for the regulator circuit.
The maximum power dissipation must not be exceeded
for proper operation.
No Load Stability
Unlike many other voltage regulators, the MIC5373/83
will remain stable and in regulation with no load.
M9999-091712
September 2012
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Micrel, Inc.
MIC5373/83
For example, when operating the MIC5373-MG4YMT at
an input voltage of 3.6V and 150mA load on LDO1,
LDO2 and LDO3 with a minimum layout footprint, the
maximum ambient operating temperature TA can be
determined as illustrated Equation 5:
0.75W = (125°C – TA) / (100°C/W)
TA = 50°C
Eq. 5
Therefore the maximum ambient operating temperature
of 50°C is allowed in a 2.5mm x 2.5mm Thin MLF
package for the voltage options specified and at the
maximum load of 150mA on each output. For a full
discussion of heat sinking and thermal effects on voltage
regulators, refer to the “Regulator Thermals” section of
Micrel’s Designing with Low-Dropout Voltage Regulators
handbook. This information can be found on Micrel's
website at:
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
M9999-091712
September 2012
18
Micrel, Inc.
MIC5373/83
Typical Circuit (MIC5373-xxxYMT)
Bill of Materials
Item
Part Number
Manufacturer Description
Qty.
1
C1
C1005X5R1A104K
C1005X5R1A105K
Optional
TDK(1)
Capacitor, 0.1µF Ceramic, 10V, X5R, Size 0402
C2,C3, C5, C6, C7
TDK
Capacitor, 1µF Ceramic, 10V, X5R, Size 0402
5
C9
1
C10
R4
C1005C0G1H151J
CRCW0402100KFKED
Optional
TDK
Vishay(2)
Vishay
Capacitor, 150pF Cermaic, 50V, C0G, Size 0402
1
100kΩ, 1%, 0402
Optional
1
R5, R6
R10
U1
2
CRCW040210KFKED
MIC5373-xxxYMT
Vishay
Micrel, Inc.(3)
10kΩ, 1%, 0402
1
High-Performance Active-High Enable Triple LDO
1
Notes:
1. TDK: www.tdk.com.
2. Vishay: www.vishay.com.
3. Micrel, Inc.: www.micrel.com.
M9999-091712
September 2012
19
Micrel, Inc.
MIC5373/83
Typical Circuit (MIC5383-xxxYMT)
Bill of Materials
Item
Part Number
Manufacturer Description
Qty.
1
C1
C1005X5R1A104K
C1005X5R1A105K
Optional
TDK(1)
Capacitor, 0.1µF Ceramic, 10V, X5R, Size 0402
C2,C3, C5, C6, C7
TDK
Capacitor, 1µF Ceramic, 10V, X5R, Size 0402
5
C9
1
C10
R4
C1005C0G1H151J
CRCW0402100KFKED
Optional
TDK
Vishay(2)
Vishay
Capacitor, 150pF Cermaic, 50V, C0G, Size 0402
1
100kΩ, 1%, 0402
Optional
1
R5, R6
R10
U1
2
CRCW040210KFKED
MIC5383-xxxYMT
Vishay
Micrel, Inc.(3)
10kΩ, 1%, 0402
1
High-Performance Active-Low Enable Triple LDO
1
Notes:
1. TDK: www.tdk.com.
2. Vishay: www.vishay.com.
3. Micrel, Inc.: www.micrel.com.
M9999-091712
September 2012
20
Micrel, Inc.
MIC5373/83
PCB Layout Recommendations
Recommended Top Layout
Recommended Bottom Layout
M9999-091712
September 2012
21
Micrel, Inc.
MIC5373/83
Package Information
16-Pin 2.5mm x 2.5mm Thin MLF (MT)
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This
information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,
specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability
whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties
relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
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into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A
Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
© 2010 Micrel, Incorporated.
M9999-091712
September 2012
22
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