MIC94300
200mA Switch
with Ripple Blocker™ Technology
General Description
The MIC94300 is an integrated load switch that
incorporates Micrel’s Ripple Blocker™ active filter
technology. The MIC94300 provides high-frequency ripple
attenuation (switching noise rejection) for applications
where a switching noise cannot be tolerated by sensitive
downstream circuits such as in RF applications. A low-
voltage logic enable pin disconnects the pass element and
places the MIC94300 into a low current-shutdown state
when disabled.
The MIC94300 operates from an input voltage of 1.8V to
3.6V, allowing true load switching of low-voltage power
rails in any electronic device. The output voltage (V
OUT
) is
set at a fixed drop (typically 170mV) from the input voltage
(V
OUT
= V
IN
– 170mV). This maintains high efficiency
independent of given load conditions and currents.
Packaged in a 0.88mm x 0.88mm 4-ball CSP or 4-pin
1.2mm x 1.6mm Thin MLF
®
package, the MIC94300 has a
junction operating temperature range of
−40°C
to +125°C.
Data sheets and support documentation can be found on
Micrel’s web site at:
www.micrel.com.
Features
•
1.8V to 3.6V input voltage range
•
Active noise rejection over a wide frequency band
−
>60dB from 40kHz to 5MHz
•
Rated to 200mA output current
•
Current-limit and thermal-limit protected
•
Ultra-small 0.88mm x 0.88mm 4-ball CSP
•
1.2mm x 1.6mm, 4-pin Thin MLF
®
•
Logic-controlled enable pin
• −40°C
to +125°C junction temperature range
Applications
•
•
•
•
•
•
•
Smart phones
Tablet PC/notebooks and webcams
Digital still and video cameras
Videoconferencing
Bar-code scanners
Global positioning systems
Automotive and industrial applications
_________________________________________________________________________________________________
Typical Application
PSRR C
OUT
= 1µF
0
-10
-20
-30
V
IN
= 3.6V
PSRR (dB)
-40
-50
-60
-70
-80
-90
V
IN
= V
IN(NOM)
+ 40mVpp
LOAD = 100mA
V
IN
= 1.8V
V
IN
= 2.5V
-100
10
100
1K
10K
100K
1M
10M
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
FREQUENCY (Hz)
Ripple Blocker is a trademark of Micrel, Inc
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
February 2012
M9999-020312-A
Micrel, Inc.
MIC94300
Absolute Maximum Ratings
(1)
Input Voltage (V
IN
) ...........................................
−0.3V
to
+4V
Output Voltage (V
OUT
). ....................................
−0.3V
to
+4V
Enable Voltage (V
EN
)..................−0.3V to V
IN
+
0.3V or
+4V
Lead Temperature (soldering, 10s)............................ 260°C
Storage Temperature (T
S
).........................
−65°C
to
+150°C
ESD Rating
(3)
.................................................................. 3kV
Operating Ratings
(2)
Input Voltage (V
IN
)........................................ +1.8V to +3.6V
Enable Voltage (V
EN
).............................................. 0V to V
IN
Junction Temperature (T
J
) ........................ –40°C to +125°C
Junction Thermal Resistance
0.88mm x 0.88mm WLCSP (θ
JA
) .....................250°C/W
1.2mm x 1.6mm Thin MLF
®
(θ
JA
).....................173°C/W
Electrical Characteristics
(4)
V
IN
= V
EN
= 3.6V; I
OUT
= 100µA; C
OUT
= 1µF; T
A
= 25°C,
bold
values indicate –40°C
≤
T
J
≤
+125°C, unless noted.
Parameter
Input Voltage
Voltage Drop
V
IN
Ripple Rejection
(PSRR)
Total Output Noise
Current Limit
Turn-On Time
Load Regulation
Ground Current
Shutdown Current
Enable
Input Logic LOW
Input Logic HIGH
Input Current
Notes:
1.
2.
3.
4.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
Specification for packaged product only.
Condition
V
IN
−
V
OUT
,
−40°C ≤
T
J
≤ +85°C
f = 20kHz, I
OUT
= 100mA
f = 100kHz to 5MHz, I
OUT
= 100mA
f = 10Hz to 100kHz
V
OUT
= 0V
EN controlled
100µA to 100mA
I
OUT
= 100µA
V
EN
= 0V
Min.
1.8
Typ.
170
45
60
98
Max.
3.6
250
Units
V
mV
dB
µV
RMS
200
315
40
10
138
0.2
400
150
200
mA
µs
mV
µA
µA
0.4
1.0
0.01
1
V
V
µA
February 2012
4
M9999-020312-A
Micrel, Inc.
MIC94300
Typical Characteristics
PSRR C
OUT
= 0.47µF
0
-10
-20
-30
I
OUT
= 200mA
0
-10
-20
-30
PSRR C
OUT
= 0.47µF
0
-10
-20
-30
PSRR C
OUT
= 1µF
PSRR (dB)
PSRR (dB)
-40
-50
-60
-70
-80
-90
PSRR (dB)
I
OUT
= 100mA
-40
-50
-60
-70
V
IN
= 1.8V
V
IN
= 3.6V
-40
-50
-60
-70
I
OUT
= 100mA
I
OUT
= 200mA
I
OUT
= 10mA
V
IN
= 3.6V+40mVpp
-80
-90
V
IN
= V
IN(NOM)
+ 40mVpp
LOAD = 100mA
V
IN
= 2.5V
-80
-90
I
OUT
= 10mA
V
IN
= 3.6V + 40mVpp
-100
10
100
1K
10K
100K
1M
10M
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
-100
10
100
1K
10K
100K
1M
10M
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
-100
10
100
1K
10K
100K
1M
10M
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
PSRR C
OUT
= 1µF
0
-10
-20
PSRR C
OUT
= 2.2µF
0
-10
-20
-30
0
-10
-20
PSRR C
OUT
= 2.2µF
PSRR (dB)
PSRR (dB)
-40
-50
-60
-70
-80
-90
V
IN
= V
IN(NOM)
+ 40mVpp
LOAD = 100mA
V
IN
= 1.8V
V
IN
= 3.6V
-50
-60
-70
I
OUT
= 100mA
I
OUT
= 200mA
PSRR (dB)
-30
-30
-40
-50
-60
-70
-80
-90
V
IN
= V
IN(NOM)
+ 40mVpp
LOAD = 100mA
V
IN
= 1.8V
V
IN
= 2.5V
V
IN
= 3.6V
-40
V
IN
= 2.5V
-80
-90
V
IN
= 3.6V + 40mVpp
I
OUT
= 10mA
-100
10
100
1K
10K
100K
1M
10M
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
-100
10
100
1K
10K
100K
1M
10M
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
-100
10
100
1K
10K
100K
1M
10M
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
PSRR C
OUT
= 4.7µF
0
-10
-20
-30
I
OUT
= 100mA
I
OUT
= 200mA
0
-10
-20
-30
PSRR C
OUT
= 4.7µF
0
-10
-20
-30
PSRR C
OUT
= 10µF
I
OUT
= 100mA
I
OUT
= 200mA
PSRR (dB)
PSRR (dB)
-40
-50
-60
-70
-80
-90
-40
-50
-60
-70
V
IN
= 2.5V
V
IN
= 3.6V
V
IN
= V
IN
+ 40mVpp
LOAD = 100mA
PSRR (dB)
V
IN
= 1.8V
-40
-50
-60
-70
-80
-90
V
IN
= 3.6V + 40mVpp
I
OUT
= 10mA
I
OUT
= 10mA
V
IN
= 3.6V+40mVpp
-80
-90
-100
10
100
1K
10K
100K
1M
10M
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
-100
10
100
1K
10K
100K
1M
10M
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
-100
10
100
1K
10K
100K
1M
10M
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
February 2012
5
M9999-020312-A
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
