ON MC33264DM-2.8 Low dropout micropower voltage regulators with on/off control Datasheet

Order this document by MC33264/D

LOW DROPOUT
MICROPOWER VOLTAGE
REGULATORS WITH
ON/OFF CONTROL
The MC33264 series are micropower low dropout voltage regulators
available in SO–8 and Micro–8 surface mount packages and a wide range of
output voltages. These devices feature a very low quiescent current (100 µA
in the ON mode; 0.1 µA in the OFF mode), and are capable of supplying
output currents up to 100 mA. Internal current and thermal limiting protection
is provided. They require only a small output capacitance for stability.
Additionally, the MC33264 has either active HIGH or active LOW control
(Pins 2 and 3) that allows a logic level signal to turn–off or turn–on the
regulator output.
Due to the low input–to–output voltage differential and bias current
specifications, these devices are ideally suited for battery powered
computer, consumer, and industrial equipment where an extension of useful
battery life is desirable.
MC33264 Features:
•
•
•
•
•
•
•
•
SEMICONDUCTOR
TECHNICAL DATA
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
8
Low Quiescent Current (0.3 µA in OFF Mode; 95 µA in ON Mode)
1
Low Input–to–Output Voltage Differential of 47 mV at 10 mA, and
131 mV at 50 mA
Multiple Output Voltages Available
DM SUFFIX
PLASTIC PACKAGE
CASE 846A
(Micro–8)
Extremely Tight Line and Load Regulation
8
Stable with Output Capacitance of Only
0.22 µF for 4.0 V, 4.75 V and 5.0 V Output Voltages
0.33 µF for 2.8 V, 3.0 V, 3.3 V and 3.8 V Output Voltages
Internal Current and Thermal Limiting
1
Logic Level ON/OFF Control
PIN CONNECTIONS
Functionally Equivalent to TK115XXMC and LP2980
Representative Block Diagram
1
8
Vin
1
8 Output
2
On/Off
3
7 Base
6 Gnd
N/C
4
5 Adjust
Vout
Thermal and
Anti–Sat
Protection
2
Input
On/Off
(Top View)
7
Base
ORDERING INFORMATION
On/Off
Rint
Device
5
Adj
1.23 V
Vref
3
52.5 k
MC33264
On/Off
6
Gnd
This device contains 37 active transistors.
MC33264D–2.8
MC33264D–3.0
MC33264D–3.3
MC33264D–3.8
MC33264D–4.0
MC33264D–4.75
MC33264D–5.0
MC33264DM–2.8
MC33264DM–3.0
MC33264DM–3.3
MC33264DM–3.8
MC33264DM–4.0
MC33264DM–4.75
MC33264DM–5.0
 Motorola, Inc. 1998
MOTOROLA ANALOG IC DEVICE DATA
Operating
Temperature Range Package
SO–8
TA = – 40° to +85°C
Micro–8
Rev 3
1
MC33264
MAXIMUM RATINGS (TC = 25°C, unless otherwise noted.)
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Symbol
Value
Unit
VCC
13
Vdc
PD
Internally Limited
W
RθJA
RθJC
180
45
°C/W
°C/W
RθJA
240
°C/W
Output Current
IO
100
mA
Maximum Adjustable Output Voltage
VO
1.15 x Vnom
Vdc
Operating Junction Temperature
TJ
125
°C
Operating Ambient Temperature
TA
–40 to +85
°C
Tstg
–65 to +150
°C
Rating
Input Voltage
Power Dissipation and Thermal Characteristics
Maximum Power Dissipation
Case 751 (SO–8) D Suffix
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Case 846A (Micro–8) DM Suffix
Thermal Resistance, Junction–to–Ambient
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Storage Temperature Range
NOTE:
ESD data available upon request.
ELECTRICAL CHARACTERISTICS (Vin = 6.0 V, IO = 10 mA, CO = 1.0 µF, TJ = 25°C (Note 1), unless otherwise noted.)
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Characteristic
Output Voltage (IO = 0 mA)
2.8 Suffix (VCC = 3.8 V)
3.0 Suffix (VCC = 4.0 V)
3.3 Suffix (VCC = 4.3 V)
3.8 Suffix (VCC = 4.8 V)
4.0 Suffix (VCC = 5.0 V)
4.75 Suffix (VCC = 5.75 V)
5.0 Suffix (VCC = 6.0 V)
Vin = (VO + 1.0) V to 12 V, IO < 60 mA,TA= –40° to +85°C
2.8 Suffix
3.0 Suffix
3.3 Suffix
3.8 Suffix
4.0 Suffix
4.75 Suffix
5.0 Suffix
Symbol
Min
Typ
Max
2.74
2.96
3.23
3.72
3.92
4.66
4.9
2.8
3.0
3.3
3.8
4.0
4.75
5.0
2.86
3.04
3.37
3.88
4.08
4.85
5.1
2.7
2.9
3.18
3.67
3.86
4.58
4.83
–
–
–
–
–
–
–
2.9
3.1
3.42
3.93
4.14
4.92
5.17
VO
Unit
V
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Line Regulation (Vin = [VO + 1.0] V to 12 V, IO = 60 mA)
All Suffixes
Regline
–
2.0
10
mV
Load Regulation (Vin = [VO + 1.0], IO = 0 mA to 60 mA)
All Suffixes
Regload
–
16
25
mV
Dropout Voltage
IO = 10 mA
IO = 50 mA
IO = 60 mA
VI – VO
–
–
–
47
131
147
90
200
230
–
–
–
95
0.3
540
150
2.0
900
mV
µA
Quiescent Current
ON Mode (Vin = [VO + 1.0] V, IO = 0 mA)
OFF Mode
ON Mode (Vin = [VO + 0.5] V, IO = 0 mA) [Note2]
IQ
Ripple Rejection (Vin peak–to–peak = [VO + 1.5] to [VO + 5.5]
V at f = 1.0 kHz)
–
55
65
–
dB
TC
–
±120
–
ppm/°C
ILimit
100
150
–
mA
–
–
110
46
–
–
Output Voltage Temperature Coefficient
Current Limit (Vin = [VO + 1.0], VO Shorted)
Output Noise Voltage (10 Hz to 100 kHz) (Note 3)
CL = 1.0 µF
CL = 100 µF
µVrms
Vn
NOTES: 1. Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
2. Quiescent current is measured where the PNP pass transistor is in saturation. VCE = –0.5 V guarantees this condition.
3. Noise tests on the MC33264 are made with a 0.01 µF capacitor connected across Pins 8 and 5.
2
MOTOROLA ANALOG IC DEVICE DATA
MC33264
ELECTRICAL CHARACTERISTICS (continued) (Vin = 6.0 V, IO = 10 mA, CO = 1.0 µF, TJ = 25°C (Note 1), unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
2.4
0
–
–
Vin
0.5
0
Vin – 0.2
–
–
Vin – 2.4
Vin
–
1.9
–
–
12
–
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ON/OFF INPUTS
On/Off Input (Pin 3 Tied to Ground)
Logic “1” (Regulator ON)
Logic “0” (Regulator OFF)
On/Off Input (Pin 2 Tied to Vin)
Logic “0” (Regulator ON)
Logic “1” (Regulator OFF)
VOn/Off
On/Off Pin Input Current (Pin 3 Tied to Ground)
VOn/Off= 2.4 V
On/Off Pin Input Current (Pin 2 Tied to Vin)
VOn/Off = Vin – 2.4 V
IOn/Off
V
µA
NOTES: 1. Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
2. Quiescent current is measured where the PNP pass transistor is in saturation. VCE = –0.5 V guarantees this condition.
3. Noise tests on the MC33264 are made with a 0.01 µF capacitor connected across Pins 8 and 5.
DEFINITIONS
Dropout Voltage – The input/output voltage differential at
which the regulator output no longer maintains regulation
against further reductions in input voltage. Measured when
the output drops 100 mV below its nominal value (which is
measured at 1.0 V differential), dropout voltage is affected by
junction temperature, load current and minimum input supply
requirements.
Line Regulation – The change in output voltage for a
change in input voltage. The measurement is made under
conditions of low dissipation or by using pulse techniques such
that average chip temperature is not significantly affected.
Load Regulation – The change in output voltage for a
change in load current at constant chip temperature.
Maximum Power Dissipation – The maximum total
device dissipation for which the regulator will operate within
specifications.
Quiescent Current – Current which is used to operate the
regulator chip and is not delivered to the load.
Output Noise Voltage – The rms ac voltage at the output,
with constant load and no input ripple, measured over a
specified frequency range.
Figure 1. Quiescent Current
versus Load Current
Figure 2. Output Voltage versus Input Voltage
1.0
6.0
VO, OUTPUT VOLTAGE (V)
IQ, QUIESCENT CURRENT (mA)
5.0
TA = 25°C
MC33264D–5.0
0.10
0.03
0.1
5.0
TA = 25°C
MC33264D–5.0
4.0
RL = 5.0 k
3.0
RL = 100 Ω
2.0
1.0
1.0
10
Iload, LOAD CURRENT (mA)
MOTOROLA ANALOG IC DEVICE DATA
100
0
0
1.0
2.0
3.0
4.0
5.0
6.0
Vin, INPUT VOLTAGE (V)
3
MC33264
Figure 3. Input Current versus Input Voltage
Figure 4. Output Voltage versus Temperature
5.04
1000
VO, OUTPUT VOLTAGE (V)
I , INPUT CURRENT (µA)
in
5.03
800
600
No Load
TA = 25°C
MC33264D–5.0
400
200
5.02
IO = 10 mA
TA = 25°C
MC33264D–5.0
5.01
5.00
4.99
4.98
4.97
2.0
4.0
6.0
8.0
10
4.96
–55
12
V I – VO, DROPOUT VOLTAGE (mV)
RL = 40 to 50 k
CL = 1.0 µF
TA = 25°C
MC33264D–5.0
160
120
80
40
1.0
10
100
400
V I – VO, DROPOUT VOLTAGE (mV) RL= 100 to 500 Ω
Figure 5. Dropout Voltage versus Output Current
240
0
0.3
50
25
75
100
125
TA, AMBIENT TEMPERATURE (°C)
Vin, INPUT VOLTAGE (V)
200
0
–25
Figure 6. Dropout Voltage versus Temperature
300
250
55
RL = 5.0 k
TA = 25°C
MC33264D–5.0
RL = 100
200
50
45
RL = 5.0 k
150
40
100
50
–50
IO, OUTPUT CURRENT (mA)
RL = 500
0
50
100
35
30
150
V I – VO, DROPOUT VOLTAGE (mV) RL= 5.0 k
0
0
TA, TEMPERATURE (°C)
APPLICATION INFORMATION
Introduction
The MC33264 regulators are designed with internal
current limiting and thermal shutdown making them
user–friendly. These regulators require only 0.33 µF (or
greater) capacitance between the output terminal and ground
for stability for 2.8 V, 3.0 V, 3.3 V and 3.8 V output voltage
options. Output voltage options of 4.0 V, 4.75 V and 5.0 V
require only 0.22 µF for stability. The output capacitor must
be mounted as close to the MC33264 as possible. If the
output capacitor must be mounted further than two
centimeters away from the MC33264, then a larger value of
output capacitor may be required for stability. A value of 0.68
µF or larger is recommended. Most types of aluminum,
tantalum or multilayer ceramic will perform adequately. Solid
tantalums or appropriate multilayer ceramic capacitors are
recommended for operation below 25°C.
A bypass capacitor is recommended across the MC33264
input to ground if more than 4.0 inches of wire connects the
input to either a battery or power supply filter capacitor.
4
On/Off Control
On/Off control of the regulator may be accomplished in
either of two ways. Pin 3 may be tied to circuit ground and a
positive logic control applied to Pin 2. The regulator will be
turned on by a positive (>2.4 V) level, typically 5.0 V with
respect to ground, sourcing a typical current of 6.0 µA. The
regulator will turn off if the control input is a logic “0”
(<0.5 V). Alternatively, Pin 2 may be tied to the regulator
input voltage and a negative logic control applied to Pin 3.
The regulator will be turned on when the control voltage is
less than Vin – 2.4 V, sinking a typical current of 18 µA when
Vin = 6.0 V. The regulator is off when the control input is
open or greater than Vin – 0.2 V.
Programming The Output Voltage
The MC33264 output voltage is automatically set using its
internal voltage divider. Alternatively, it may be programmed
within a typical ±15% range of its preset output voltage. An
external pair of resistors is required, as shown in Figure 7.
MOTOROLA ANALOG IC DEVICE DATA
MC33264
Figure 7. Regulator Output Voltage Trim
Vin
3.3 µF
1
Control Input
2
Vin
Vout
On/Off
Base
3
Vout
3.0, 3.3 or 5.0 V
8
7
R1
4
On/Off
3.3 µF
N/C
N/C
Gnd
0.01
Adj
6
5
R2
ǒ Ǔ
The complete equation for the output voltage is:
V out
) IFB R1
+ Vref 1 ) R1
R2
where Vref is the nominal 1.235 V reference voltage and IFB is
the feedback pin bias current, nominally –20 nA. The
minimum recommended load current of 1.0 µA forces an
upper limit of 1.2 MΩ on the value of R2, if the regulator must
work with no load. IFB will produce a 2% typical error in Vout
which may be eliminated at room temperature by adjusting
R1. For better accuracy, choosing R2 = 100 K reduces this
error to 0.17% while increasing the resistor program current
to 12 µA.
Output Noise
In many applications it is desirable to reduce the noise
present at the output. Reducing the regulator bandwidth by
increasing the size of the output capacitor is the only method
for reducing noise.
Noise can be reduced fourfold by a bypass capacitor
across R1, since it reduces the high frequency gain from 4 to
unity for the MC33264D–5.0. Pick
C
BYPASS
+ 2π R1 x1 200 Hz
or about 0.01 µF. When doing this, the output capacitor must
be increased to 3.3 µF to maintain stability. These changes
reduce the output noise from 430 µV to 100 Vrms for a
100 kHz bandwidth for the 5.0 V output device. With the
bypass capacitor added, noise no longer scales with output
voltage so that improvements are more dramatic at higher
output voltages.
TYPICAL APPLICATIONS
Figure 8. Lithium Ion Battery Cell Charger
Unregulated Input
6.0 to 10 Vdc
2
Control
1
Vin
Vout
200 k
1%
7
0.1
Base
MC33264D–5.0
3
On/Off
Gnd
6
4.2 V ± 0.15 V
1N4001
8
On/Off
Adj
5
N/C
4
N/C
100 k
1%
Lithium Ion
Rechargeable Cell
0.22
50 k
Ground
MOTOROLA ANALOG IC DEVICE DATA
5
MC33264
Figure 9. Low Drift Current Source
+V = 4.0 to 12 V
IL
Load
IL = 1.23/R
0.1
1
Vin
2
Control
8
Vout
On/Off
Base
3
On/Off
7
N/C
4
N/C
Gnd
Adj
5
6
1.0 µF
R
Figure 10. 2.0 Ampere Low Dropout Regulator
+Vin
Current Limit
Section
1000 µF
0.05
470
680
2N3906
2N3906
120 k
TIP32B
0.33
2
1
Vin
On/Off
Vout
Base
MC33264
220
3
8
7
4
On/Off
N/C
N/C
0.01
75 k
0.033
100 µF
Vout @ 2.0 A
R1
Adj
Gnd
6
4.7 µF
Tant
5
R2
6
MOTOROLA ANALOG IC DEVICE DATA
MC33264
Figure 11. Low Battery Disconnect
6.0 V
Lead–Acid Battery
31.6 k
22.1 k
100 k
2
MC34164P–5
1
Vin
5
1
8
3
Base
MC33264
3
0.1
2
Memory V+
4
On/Off
20
N/C
Adj
Gnd
4
Main V+
Vout
On/Off
NiCad
Backup Battery
1.0 µF
R2
3.0 k
5
R1
1.0 k
Figure 12. RF Amplifier Supply
1.0
0.1
VBB Double
3
11
1.0
12
2
1
VCC
14
MC33169
VBB
Triple
9
Gate Drive
Output
10
Sense
Input
6
Negative
Generator
(–2.5 V or –4.0 V)
5
7
Vout
On/Off
3
Sense
Charge
Pump
Vin
2
8
7
N/C
4
On/Off
N/C
Adj
Gnd
6
TIP32B
0.33
1
Base
MC33264
Priority
Management
Tx On Input
13
On/Off
Idle Mode Input
200
8
VBB
Generator
(Voltage Tripler)
Gnd
VBattery 7.0 V
100 µF
0.1
3.0 k
0.01
5
5.0 V @ 0.5 A
4.7 µF
Tant
1.0 k
100 µF
VSS
Output
4
RF
Out
RF In
1.0
1N5819
Power Amplifier
0.22
100
MOTOROLA ANALOG IC DEVICE DATA
0.1
7
MC33264
OUTLINE DIMENSIONS
D SUFFIX
PLASTIC PACKAGE
CASE 751–05
(SO–8)
ISSUE R
D
A
8
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
2. DIMENSIONS ARE IN MILLIMETERS.
3. DIMENSION D AND E DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE.
5. DIMENSION B DOES NOT INCLUDE MOLD
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS
OF THE B DIMENSION AT MAXIMUM MATERIAL
CONDITION.
C
5
0.25
H
E
B
M
M
1
4
B
e
h
X 45 _
q
A
C
DIM
A
A1
B
C
D
E
e
H
h
L
SEATING
PLANE
0.10
A1
B
0.25
M
L
C B
A
S
q
S
DM SUFFIX
PLASTIC PACKAGE
CASE 846A–02
(Micro–8)
ISSUE C
–A–
–B–
K
PIN 1 ID
G
D 8 PL
0.08 (0.003)
–T–
M
T B
S
A
0.038 (0.0015)
C
H
J
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A DOES NOT INCLUDE MOLD FLASH,
PROTRUSIONS OR GATE BURRS. MOLD FLASH,
PROTRUSIONS OR GATE BURRS SHALL NOT
EXCEED 0.15 (0.006) PER SIDE.
4. DIMENSION B DOES NOT INCLUDE INTERLEAD
FLASH OR PROTRUSION. INTERLEAD FLASH OR
PROTRUSION SHALL NOT EXCEED 0.25 (0.010)
PER SIDE.
S
SEATING
PLANE
L
MILLIMETERS
MIN
MAX
1.35
1.75
0.10
0.25
0.35
0.49
0.18
0.25
4.80
5.00
3.80
4.00
1.27 BSC
5.80
6.20
0.25
0.50
0.40
1.25
0_
7_
DIM
A
B
C
D
G
H
J
K
L
MILLIMETERS
MIN
MAX
2.90
3.10
2.90
3.10
–––
1.10
0.25
0.40
0.65 BSC
0.05
0.15
0.13
0.23
4.75
5.05
0.40
0.70
INCHES
MIN
MAX
0.114
0.122
0.114
0.122
–––
0.043
0.010
0.016
0.026 BSC
0.002
0.006
0.005
0.009
0.187
0.199
0.016
0.028
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
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specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
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arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.
Mfax is a trademark of Motorola, Inc.
How to reach us:
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8
◊
MC33264/D
MOTOROLA ANALOG IC DEVICE
DATA