Other voltages available. Contact Micrel for details.
** Under bar ( __ ) symbol may not be to scale.
*** TO-92 Package discontinuance notification issued September 2007. End-of-life-buy offered thru December 31, 2007. Contact factory for
additional information.
December 2007
2
M9999-123107
Micrel, Inc.
MIC5207
Pin Configuration
1
IN
2
3
GND OUT
(Bottom View)
MIC5207BM5/YM5 (M5)
(Adjustable Voltage)
MIC5207-x.xBM5/YM5 (M5)
MIC5207-x.xBD5/YD5 (D5)
(Fixed Voltage)
MIC5207-x.xBZ/YZ (Z)
(Fixed Voltage)
Pin Description
Pin Number
SOT-23-5
1
2
3
4 (fixed)
Pin Number
TO-92
1
2
Pin Name
IN
GND
EN
BYP
Pin Function
Supply Input
Ground
Enable/Shutdown (Input): CMOS compatible input. Logic high = enable,
logic low or open = shutdown. Do not leave floating.
Reference Bypass: Connect external 470pF capacitor to GND to reduce output
noise. May be left open. For 1.8V or 2.5V operation, see “Applications
Information.”
Adjust (Input): Adjustable regulator feedback input. Connect to resistor voltage
divider.
Regulator Output
4 (adj.)
5
3
ADJ
OUT
December 2007
3
M9999-123107
Micrel, Inc.
MIC5207
Absolute Maximum Ratings
(1)
Supply Input Voltage (V
IN
).............................. –20V to +20V
Enable Input Voltage (V
EN
)............................. –20V to +20V
Power Dissipation (P
D
) .......................... Internally Limited
(3)
Lead Temperature (soldering, 5 sec)......................... 260°C
Junction Temperature (T
J
)
All except 1.8V....................................–40°C to +125°C
1.8V ONLY.............................................. 0°C to +125°C
Storage Temperature (T
S
).........................–65°C to +150°C
Operating Ratings
(2)
Supply Input Voltage (V
IN
)............................. +2.5V to +16V
Enable Input Voltage (V
EN
)..................................... 0V to V
IN
Junction Temperature (T
J
)
All except 1.8V.................................... –40°C to +125°C
1.8V ONLY.............................................. 0°C to +125°C
Thermal Resistance (θ
JA
)..........................................
Note 3
MSOP-8 (θ
JA
)
(3)
Electrical Characteristics
V
IN
= V
OUT
+ 1V; I
L
= 100µA; C
L
= 1.0µF; V
EN
≥
2.0V; T
J
= 25°C,
bold
values indicate –40°C < T
J
< +125°C except
0°C < T
J
< +125°C for 1.8V, unless noted.
Symbol
V
O
∆V
O
/∆T
∆V
O
/V
O
∆V
O
/V
O
V
IN
–
V
O
Parameter
Output Voltage Accuracy
Output Voltage
Temperature Coefficient
Line Regulation
Load Regulation
Dropout Voltage,
Note 6
Condition
Variation from nominal V
OUT
Min
–3
–4
Typ
Max
3
4
Units
%
%
ppm/°C
Note 4
V
IN
= V
OUT
+ 1V to 16V
I
L
= 0.1mA to 150mA,
Note 5
I
L
= 100µA
I
L
= 50mA
I
L
= 100mA
I
L
= 150mA
40
0.005
0.05
17
115
140
165
0.01
80
350
720
1800
75
0.05
0.10
0.5
0.7
60
80
175
250
280
325
300
400
1
5
130
170
650
900
1100
2000
2500
3000
500
%/V
%/V
%
%
mV
mV
mV
mV
mV
mV
mV
mV
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
dB
mA
%/W
I
GND
I
GND
Quiescent Current
Ground Pin Current,
Note 7
V
EN
≤
0.4V (shutdown)
V
EN
≤
0.18V (shutdown)
V
EN
≥
2.0V, I
L
= 100µA
I
L
= 50mA
I
L
= 100mA
I
L
= 150mA
PSRR
I
LIMIT
∆V
O
/∆P
D
Ripple Rejection
Current Limit
Thermal Regulation
V
OUT
= 0V
320
0.05
Note 8
e
no
Output Noise
I
L
= 50mA, C
L
= 2.2µF,
470pF from BYP to GND
260
nV√Hz
December 2007
4
M9999-123107
Micrel, Inc.
MIC5207
Symbol
V
IL
V
IH
I
IL
I
IH
Notes:
Parameter
Enable Input Logic-Low Voltage
Enable Input Logic-High
Voltage
Enable Input Current
Condition
Regulator shutdown
Regulator enable
V
IL
≤
0.4V
V
IL
≤
0.18V
V
IH
≥
2.0V
V
IH
≥
2.0V
Min
Typ
Max
0.4
0.18
Units
V
V
V
Enable Input
2.0
0.01
5
–1
–2
20
25
µA
µA
µA
µA
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. The maximum allowable power dissipation at any T
A
(ambient temperature) is P
D(max)
= (T
J(max)
–T
A
) /
θ
JA
. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. The
θ
JA
of the SOT-23-5 (M5) is 235°C/W, and the
TO-92 (Z) is 180°C/W (0.4” leads) or 160°C/W (0.25” leads) soldered on a PC board (see “Thermal Considerations” for further details).
4. Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
5. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range
from 0.1mA to 180mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.
6. Dropout Voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1Vdifferential.
7. Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of the load
current plus the ground pin current.
8. 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
regulation effects. Specifications are for a 180mA load pulse at V
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