MIC5370/1
High Performance Dual 150mA LDO
1.6mm x1.6mm Thin MLF
®
General Description
The MIC5370/1 is an advanced dual LDO ideal for
powering general purpose portable devices. The
MIC5370/1 provides two independently controlled, high
performance 150mA LDOs in a tiny 1.6mm x 1.6mm Thin
MLF
®
package.
Ideal for battery powered applications, the MIC5370/1
offers 2% initial accuracy, low dropout voltage
(155mV@150mA) and low ground current (typically 32μA
per LDO). The MIC5370/1 can also be put into a zero-off-
mode current state, drawing virtually no current when
disabled.
When the MIC5371 is disabled an internal resistive load is
automatically applied to the output to discharge the output
capacitor. This LDO offers fast transient response and
high PSRR while consuming a minimum operating current.
The MIC5370/1 is available in fixed output voltages in a
lead-free (RoHS compliant) 6-pin 1.6mm x 1.6mm Thin
MLF
®
package.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Features
•
2.5V to 5.5V input voltage range
•
Two 150mA output current LDOs
•
High output accuracy
– ±2% initial accuracy
•
Low quiescent current – 32µA per LDO
•
Stable with 1uF ceramic output capacitors
•
Independent enable pins
•
Low dropout voltage – 155mV at 150mA
•
Thermal shutdown protection
•
Current limit protection
•
Output discharge circuit – MIC5371
•
Thin 6-pin 1.6mm x 1.6mm Thin MLF
®
package
Applications
•
•
•
•
Camera phones
Mobile phones
GPS, PMP, PDAs and handhelds
Portable electronics
___________________________________________________________________________________________________________
Typical Application
MIC5370/1-xxYMT
VIN
EN1
VBAT
1µF
EN2
GND
VOUT1
VOUT2
1µF
1µF
I/O
VCORE
Camera DSP Power Supply Circuit
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
September 2008
M9999-093008-A
Micrel, Inc.
MIC5370/1
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
) ........................................ –0.3V to +6V
Enable Voltage (V
EN1,
V
EN2
)............................... –0.3V to V
IN
Power Dissipation (P
D
) ........................... Internally Limited
(3)
Lead Temperature (soldering, 10sec.)....................... 260°C
Junction Temperature (T
J
) ........................–40°C to +125°C
Storage Temperature (T
s
) .........................–65°C to +150°C
ESD Rating
(4)
.................................................................. 2kV
Operating Ratings
(2)
Supply Voltage (V
IN
)....................................... +2.5V to 5.5V
Enable Voltage (V
EN1,
V
EN2
)............................... –0.3V to V
IN
Junction Temperature (T
J
) ........................ –40°C to +125°C
Junction Thermal Resistance
1.6x1.6 Thin MLF-6 (θ
JA
) ...................................90°C/W
Electrical Characteristics
(5)
V
IN
= V
EN1
= V
EN2
= V
OUT
+ 1V; higher of the two regulator outputs; I
OUTLDO1
= I
OUTLDO2
= 100µA; C
OUT1
= C
OUT2
= 1µF;
T
J
= 25°C,
bold
values indicate –40°C to +125°C, unless noted.
Parameter
Output Voltage Accuracy
Line Regulation
Load Regulation
Dropout Voltage
Condition
Variation from nominal V
OUT
Variation from nominal V
OUT
; –40°C to +125°C
V
IN
= V
OUT
+1V to 5.5V, I
OUT
= 100µA
I
OUT
= 100µA to 150mA
I
OUT
= 50mA
I
OUT
= 150mA
Ground Pin Current
V
EN1
= High; V
EN2
= Low; I
OUT
= 0mA
V
EN1
= Low; V
EN2
= High; I
OUT
= 0mA
V
EN1
= V
EN2
= High; I
OUT1
= I
OUT2
= 0mA
Ground Pin Current in
Shutdown
Ripple Rejection
Current Limit
Output Voltage Noise
Auto-Discharge NFET
Resistance
Enable Inputs (EN1/EN2)
Enable Input Voltage
Enable Input Current
Turn-on Time
Notes:
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 of any T
A
(ambient temperature) is P
D(max)
= (T
J(max)
– T
A
) /
θ
JA
. Exceeding the maximum allowable power
dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
5. Specification for packaged product only.
Min
–2.0
–3.0
Typ
Max
+2.0
+3.0
Units
%
%
%/V
%
mV
mV
µA
µA
µA
µA
dB
0.02
0.3
55
155
32
32
57
0.05
60
200
325
200
30
0.3
1
110
310
45
45
85
1
V
EN1
= V
EN2
= 0V
f = 1kHz; C
OUT
= 1µF
V
OUT
= 0V
C
OUT
= 1µF, 10Hz to 100kHz
MIC5371 Only; V
EN1
= V
EN2
= 0V; V
IN
= 3.6V
550
mA
µV
RMS
Ω
Logic Low
Logic High
V
IL
≤
0.2V
V
IH
≥
1.2V
C
OUT
= 1µF
1.2
0.01
0.01
50
0.2
1
1
125
V
V
µA
µA
µs
September 2008
5
M9999-093008-A
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