PT7M8216
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300mA, High PSRR, Tiny package, LDO Regulator
Features
Description
PT7M8216 is a high accurate, low dropout voltage
regulator with low noise, high ripple rejection and low
current consumption.
PT7M8216 includes a reference voltage source, an error
amplifier, a driver transistor, a current limit protection, a
thermal protection and an internal phase compensator.
The output voltage for the regulator is set by factory
trimming within a range of 0.9V to 3.3V in 100mV step
includes 2.85V. PT7M8216 is stable with low ESR
ceramic capacitors.
PT7M8216 is available in a 1mm×
1mm UDFN-4L and
0.8mm×
0.8mm UDFN-4L packages. It operates over a
temperature range of -40 to +85°
C.
Input Voltage Range: 1.7V to 5.5V
300mA Guaranteed Output Current
Stable with 0.47
F Ceramic Output Capacitors
Low Dropout Voltage 150mV@150mA (Vout=2.8V)
Low Quiescent Current 36
A
High PSRR 75dB@1kHz
Auto Output Discharge
High Output Accuracy ± Initial Accuracy
2%
Thermal Shutdown and Current Limit Protection
Operating Temperature Range: -40° to +85°
C
C
Packaging (Pb-free & Green):
- 4-pin UDFN 1mm×
1mm
- 4-pin UDFN 0.8mm×
0.8mm
Applications
Cell Phones
Mobile Phones (PDC, GSM, CDMA, IMT2000 etc.)
Cordless Phones and Radio Communication
Digital Still Cameras and Video Cameras
PDA
MP3 Players
Portable Devices
Pin Assignment
4
3
3
4
1
Pin Description
Pin
No
4
2
3
5
1
I/O
I
P
I
-
O
Pin
Name
VIN
GND
EN
NC
VOUT
Top view
2
2
1
Bottom view
UDFN-4L 0.8x0.8 and UDNF-4L 1x1
Description
Regulator Supply Input. Supply voltage can range from 1.7V to 5.5V. Bypass with a 0.47F
ceramic capacitor (X5R/X7R) to GND.
Ground.
ON/OFF Control of Regulator. High active.
This pin is better to be connected to the GND, but leaving it open is also acceptable
Output of Regulator. Bypass with a 0.47F ceramic capacitor (X5R/X7R) to GND.
12-11-0014
PT0433
-3
1
11/21
/12
PT7M8216
300mA, High PSRR, Tiny package, LDO Regulator
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Maximum Ratings
Storage Temperature…………………………………... -55
o
C to +125
o
C
Ambient Temperature with Power Applied..................... -40
o
C to 85
o
C
Input Voltage …………………………………………................... +6.0V
Output Voltage ………………………………………. -0.3 to V
CC
+0.3V
EN pin Voltage ………………………………………………...… +6.0V
DC Input/Output Current ……………………………….………..700mA
Power Dissipation…………………………….…UDFN-4L 1x1 400mW
UDFN-4L 0.8x0.8 280mW
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other
conditions above those indicated in the operational
sections of this specification is not implied.
Exposure to absolute maximum rating conditions
for extended periods may affect reliability.
Min.
1.7
0
-40
Typ.
-
-
25
Max.
5.5
5.5
85
Unit
V
V
°
C
Recommended Operating Conditions
Symbol
V
IN
V
EN
T
A
Parameter
Operating Voltage
Control Input Voltage
Operating Temperature
Conditions
-
-
-
DC Electrical Characteristics
(T
A
=25° V
IN
= V
OUT
+ 1V for V
OUT
options greater than 1.5V. V
IN
= 2.5V for V
OUT
≤1.5V, unless otherwise noted.)
C,
Parameter
Output Voltage
Input Voltage
Maximum Output
Current
Dropout Voltage
Supply Current
Standby Current
Line Regulation
Load Regulation
Output Voltage
Temperature
Characteristic
Ripple Rejection
Current Limit
Short Current Limit
Thermal Shutdown
Thermal Shutdown
Hysteresis
EN “High” Voltage
EN “Low” Voltage
EN “High” Current
EN “Low” Current
Output Discharge
Resistance
Output Voltage
Noise
Note:
Symbol
V
OUT(E)
*
V
IN
I
OUTMAX
V
DIF
*
I
SS
I
STB
ΔV
OUT
/
ΔV
IN
*V
OUT
ΔV
OUT2
ΔV
OUT
/
ΔTopr*V
OUT
PSRR
I
LIM
I
SC
TSD
ΔTSD
V
ENH
V
ENL
I
ENH
I
ENL
Rdis
V
N
Conditions
V
IN
=V
OUT(S)
* +1.0V, I
OUT
=30mA
-
V
IN
=V
OUT(S)
+1.0V
I
OUT
= 150mA
2.8V ≤V
OUT(S)
V
OUT(S)
≤2.7V
V
IN
=
V
OUT(S)
+1.0V, no load
V
IN
= V
OUT(S)
+1.0V, EN=GND
Min.
V
OUT(S)
*
0.98
1.7
300
-
-
-
-
-
-
-
Typ.
V
OUT(S)
-
-
150
180
Max.
V
OUT(S)
*
1.02
5.5
-
-
-
65
1
0.2
30
-
Unit
V
V
mA
mV
µA
A
%/V
mV
ppm/℃
36
0.05
0.02
10
+/-100
V
OUT(S)
+1.0V≤V
IN
≤5.5V, I
OUT
=30mA
V
IN
= V
OUT(S)
+1.0V,
1.0mA≤I
OUT
≤150mA
I
OUT
=30mA, -40℃≤Topr≤85℃
V
IN
=[V
OUT(S)
+1.0]V
DC
+0.2Vp-p AC
I
OUT
=30mA, f=1kHz
(In case that Vout≤2.0V, V
IN
=3.0V)
V
OUT
= V
OUT(S)
*0.9
Vout=0V
-
-
-
-
V
IN
=V
OUT(S)
+1.0V
V
IN
= V
OUT(S)
+1.0V, EN=OFF
V
IN
= 4.0V, EN=OFF
C
OUT
=0.47µF, 10Hz to 100kHz
-
-
-
-
-
1.2
-
-0.10
-0.10
-
-
75
400
40
170
20
-
-
-
-
50
60
-
-
-
-
-
-
0.3
0.10
0.10
-
-
dB
mA
mA
℃
V
µA
Ω
µVrms
*1: V
OUT(S)
=
Specified output voltage
*2: V
OUT(E)
=
Effective output voltage
(I.e. the output voltage when "V
OUT(S)
+1.0V" is provided at the V
IN
pin while maintaining a certain I
OUT
value).
*3: V
DIF
={V
IN1(*5)
-V
OUT1(*4)
}
*4: V
OUT1
=A voltage equal to 98% of the output voltage whenever an amply stabilized I
OUT
{V
OUT(S)
+1.0V} is input.
*5: V
IN1
=The input voltage when V
OUT1
appears as input voltage is gradually decreased.
*6: Unless otherwise stated, V
IN
=V
OUT(S)
+1.0V
12-11-0014
PT0433
-3
2
11/21
/12
PT7M8216
300mA, High PSRR, Tiny package, LDO Regulator
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Application Circuits
Po wer Inp ut
VIN
VO UT
LDO OUTPUT
ON/OFF Inp ut
EN
Cin
G ND
C out
S in g le G ND
Note:
Cin and Cout are 0.47F low ESR ceramic capacitors
12-11-0014
PT0433
-3
3
11/21
/12
PT7M8216
300mA, High PSRR, Tiny package, LDO Regulator
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Block Diagram
VOUT
Over-current
Protectio n Circuit
EN
ON/OFF
C ircuit
VIN
GND
R ef erence
Volta g e C ircuit
Functional Description
(Refer to Block Diagram)
Output Voltage
The divided output voltage is compared with the internal reference voltage by the error amplifier with internal phase
compensator. The output of the error amplifier then drives the P-channel MOSFET to maintain a stable and constant output
voltage.
Low ESR Capacitors
The internal phase compensator maintains the stable output voltage with low ESR ceramic input and output capacitors. 0.47F
low ESR (X5R/X7R) ceramic capacitor located as close as possible to the IC’s pins is recommended.
Current Limit and Thermal Shutdown Protections
Current limit protection is used to limit the output current when an overload condition occurs. As a result, the output voltage
will drop. Thermal shutdown protection will turn off the output to reduce the power dissipation when the operation junction
temperature exceeds 170°
C.
EN Pin
The output of the regulator in PT7M8216 can be controlled with EN pin. The EN pin should be connected to a “VIN” or a
“GND” voltage as a floating input applied to inverter input of the enable circuitry will increase the current consumption.
NOTE ON USE
Please use this IC within the stated absolute maximum ratings.
Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output current.
Please keep the resistance low between VIN and GND wiring in particular.
Please wire the input capacitor (Cin) and the output capacitor (Cout) as close to the IC as possible.
12-11-0014
PT0433
-3
4
11/21
/12
PT7M8216
300mA, High PSRR, Tiny package, LDO Regulator
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Typical Performance Characteristics
1. Output Voltage vs. Output Current
PT7M8216B (1.1V)
Cin=0.47µF(Ceramics), Cout=0.47µF(Ceramics), T
A
=25°
C
1.2
PT7M8216B (3.3V)
Cin=0.47µF(Ceramics), Cout=0.47µF(Ceramics), T
A
=25°
C
3.5
1
Vin=2.5V
0.8
Vin=3.5V
Vin=5.5V
3
Vin=4.3V
2.5
Vin=5.0V
Vin=5.5V
2
Vout (V)
0.6
Vout (V)
0
50
100
150
200
Iout (mA)
250
300
350
400
1.5
0.4
1
0.2
0.5
0
0
0
50
100
150
200
250
300
350
400
450
Iout (mA)
2. Output Voltage vs. Input Voltage
PT7M8216 (1.1V)
Cin=0.47µF(Ceramics), Cout=0.47µF(Ceramics), T
A
=25°
C
1.2
1
0.8
1mA
30mA
50mA
PT7M8216B (3.3V)
Cin=0.47µF(Ceramics), Cout=0.47µF(Ceramics), T
A
=25°
C
3.5
3
2.5
1mA
30mA
50mA
Vout (V)
0.6
0.4
Vout (V)
2
1.5
1
0.2
0.5
0
0
1
2
3
Vin (V)
4
5
0
0
1
2
3
Vin (V)
4
5
6
12-11-0014
PT0433
-3
5
11/21
/12
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