MC33264 [ONSEMI]
LOW DROPOUT MICROPOWER VOLTAGE REGULATORS WITH ON/OFF CONTROL; 带ON / OFF控制低压差微功耗电压稳压器
| 型号： | MC33264 |
| 厂家： | 
ONSEMI |
| 描述： | LOW DROPOUT MICROPOWER VOLTAGE REGULATORS WITH ON/OFF CONTROL |
| 文件： | 总9页 (文件大小：120K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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.
SEMICONDUCTOR
TECHNICAL DATA
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.
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
MC33264 Features:
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
• Extremely Tight Line and Load Regulation
DM SUFFIX
PLASTIC PACKAGE
CASE 846A
(Micro–8)
8
• Stable with Output Capacitance of Only
1
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
• Logic Level ON/OFF Control
• Functionally Equivalent to TK115XXMC and LP2980
PIN CONNECTIONS
1
2
3
4
8
7
6
5
Output
Base
Gnd
Input
On/Off
On/Off
N/C
Representative Block Diagram
Adjust
1
8
V
in
V
out
(Top View)
Thermal and
Anti–Sat
7
Protection
Base
2
ORDERING INFORMATION
Operating
On/Off
R
int
Temperature Range
Device
Package
MC33264D–2.8
MC33264D–3.0
MC33264D–3.3
MC33264D–3.8
MC33264D–4.0
MC33264D–4.75
MC33264D–5.0
SO–8
5
Adj
1.23 V
T
A
= – 40° to +85°C
V
52.5 k
ref
MC33264DM–2.8
MC33264DM–3.0
MC33264DM–3.3
MC33264DM–3.8
MC33264DM–4.0
MC33264DM–4.75
MC33264DM–5.0
3
MC33264
6
Micro–8
On/Off
Gnd
This device contains 37 active transistors.
Motorola, Inc. 1998
Rev 3
MC33264
MAXIMUM RATINGS (T = 25°C, unless otherwise noted.)
C
Rating
Symbol
Value
Unit
Input Voltage
V
CC
13
Vdc
Power Dissipation and Thermal Characteristics
Maximum Power Dissipation
P
D
Internally Limited
W
Case 751 (SO–8) D Suffix
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Case 846A (Micro–8) DM Suffix
R
θJA
R
θJC
180
45
°C/W
°C/W
Thermal Resistance, Junction–to–Ambient
R
240
100
°C/W
mA
Vdc
°C
θJA
Output Current
I
O
Maximum Adjustable Output Voltage
Operating Junction Temperature
Operating Ambient Temperature
Storage Temperature Range
NOTE: ESD data available upon request.
V
1.15 x V
125
O
nom
T
J
T
–40 to +85
°C
A
T
–65 to +150
°C
stg
ELECTRICAL CHARACTERISTICS (V = 6.0 V, I = 10 mA, C = 1.0 µF, T = 25°C (Note 1), unless otherwise noted.)
in
O
O
J
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (I = 0 mA)
V
O
V
O
2.8 Suffix (V
3.0 Suffix (V
3.3 Suffix (V
3.8 Suffix (V
4.0 Suffix (V
= 3.8 V)
= 4.0 V)
= 4.3 V)
= 4.8 V)
= 5.0 V)
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
CC
CC
CC
CC
CC
4.75 Suffix (V
= 5.75 V)
CC
= 6.0 V)
5.0 Suffix (V
CC
V
in
= (V + 1.0) V to 12 V, I < 60 mA,T = –40° to +85°C
O O A
2.8 Suffix
3.0 Suffix
3.3 Suffix
3.8 Suffix
4.0 Suffix
4.75 Suffix
5.0 Suffix
2.7
2.9
–
–
–
–
–
–
–
2.9
3.1
3.18
3.67
3.86
4.58
4.83
3.42
3.93
4.14
4.92
5.17
Line Regulation (V = [V + 1.0] V to 12 V, I = 60 mA)
in
All Suffixes
Reg
–
2.0
10
mV
mV
mV
O
O
line
Load Regulation (V = [V + 1.0], I = 0 mA to 60 mA)
Reg
–
16
25
in
O
O
load
All Suffixes
Dropout Voltage
V – V
I O
I
O
I
O
I
O
= 10 mA
= 50 mA
= 60 mA
–
–
–
47
131
147
90
200
230
Quiescent Current
ON Mode (V = [V + 1.0] V, I = 0 mA)
OFF Mode
I
Q
µA
–
–
–
95
0.3
540
150
2.0
900
in
O
O
ON Mode (V = [V + 0.5] V, I = 0 mA) [Note2]
in
O
O
Ripple Rejection (V peak–to–peak = [V + 1.5] to [V + 5.5]
–
55
65
–
dB
in
O
O
V at f = 1.0 kHz)
Output Voltage Temperature Coefficient
Current Limit (V = [V + 1.0], V Shorted)
TC
–
±120
–
–
ppm/°C
mA
I
Limit
100
150
in
O
O
Output Noise Voltage (10 Hz to 100 kHz) (Note 3)
V
n
µVrms
C
C
= 1.0 µF
= 100 µF
–
–
110
46
–
–
L
L
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. V = –0.5 V guarantees this condition.
CE
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) (V = 6.0 V, I = 10 mA, C = 1.0 µF, T = 25°C (Note 1), unless otherwise noted.)
in
O
O
J
Characteristic
Symbol
Min
Typ
Max
Unit
ON/OFF INPUTS
On/Off Input (Pin 3 Tied to Ground)
Logic “1” (Regulator ON)
Logic “0” (Regulator OFF)
V
V
On/Off
2.4
0
–
–
V
in
0.5
On/Off Input (Pin 2 Tied to V )
in
Logic “0” (Regulator ON)
Logic “1” (Regulator OFF)
0
– 0.2
–
–
V
in
– 2.4
V
in
V
in
On/Off Pin Input Current (Pin 3 Tied to Ground)
I
µA
On/Off
V
= 2.4 V
–
–
1.9
12
–
On/Off
On/Off Pin Input Current (Pin 2 Tied to V )
in
V
= V – 2.4 V
in
–
On/Off
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. V = –0.5 V guarantees this condition.
CE
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
conditionsoflowdissipationorbyusingpulsetechniquessuch
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
Figure 2. Output Voltage versus Input Voltage
versus Load Current
5.0
6.0
T
= 25°C
A
5.0
4.0
MC33264D–5.0
T
= 25°C
A
MC33264D–5.0
1.0
R
= 5.0 k
L
3.0
2.0
R
= 100 Ω
L
0.10
0.03
1.0
0
0.1
1.0
10
100
0
1.0
2.0
3.0
V , INPUT VOLTAGE (V)
in
4.0
5.0
6.0
I
, LOAD CURRENT (mA)
load
3
MOTOROLA ANALOG IC DEVICE DATA
MC33264
Figure 3. Input Current versus Input Voltage
Figure 4. Output Voltage versus Temperature
1000
800
600
400
200
0
5.04
5.03
5.02
5.01
5.00
4.99
I
T
= 10 mA
= 25°C
O
A
MC33264D–5.0
No Load
T
= 25°C
A
MC33264D–5.0
4.98
4.97
4.96
0
2.0
4.0
6.0
8.0
10
12
–55
–25
0
25
50
75
C)
100
125
V
, INPUT VOLTAGE (V)
T , AMBIENT TEMPERATURE (
°
in
A
Figure 5. Dropout Voltage versus Output Current
Figure 6. Dropout Voltage versus Temperature
240
300
250
200
150
100
50
55
50
45
40
35
30
R = 5.0 k
L
R
C
T
= 40 to 50 k
L
L
A
T
A
= 25°C
= 1.0
= 25
µ
C
F
200
160
120
80
MC33264D–5.0
R
= 100
°
L
MC33264D–5.0
R
R
= 5.0 k
L
= 500
100
L
40
0
0.3
1.0
10
, OUTPUT CURRENT (mA)
100
400
–50
0
50
T , TEMPERATURE (°C)
150
I
O
A
APPLICATION INFORMATION
On/Off Control
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.
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 V – 2.4 V, sinking a typical current of 18 µA when
in
V
in
= 6.0 V. The regulator is off when the control input is
open or greater than V – 0.2 V.
in
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.
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
MOTOROLA ANALOG IC DEVICE DATA
MC33264
Figure 7. Regulator Output Voltage Trim
V
in
3.3 µF
1
V
in
V
2
3
8
7
out
3.0, 3.3 or 5.0 V
V
Control Input
On/Off
On/Off
out
3.3 µF
Base
N/C
N/C
R1
4
0.01
Gnd
Adj
6
5
R2
The complete equation for the output voltage is:
R1
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
V
V
1
I
R1
out
ref
FB
R2
where V is the nominal 1.235 V reference voltage and I is
ref FB
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
1
C
BYPASS
2π R1 x 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.
work with no load. I
will produce a 2% typical error in V
FB
out
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
TYPICAL APPLICATIONS
Figure 8. Lithium Ion Battery Cell Charger
Unregulated Input
6.0 to 10 Vdc
1
V
1N4001
in
4.2 V
± 0.15 V
2
3
8
On/Off
Control
V
out
200 k
1%
7
4
Base
N/C
N/C
0.1
MC33264D–5.0
Lithium Ion
Rechargeable Cell
On/Off
100 k
1%
0.22
Gnd
Adj
5
6
50 k
Ground
5
MOTOROLA ANALOG IC DEVICE DATA
MC33264
Figure 9. Low Drift Current Source
+V = 4.0 to 12 V
I
L
Load
I = 1.23/R
L
0.1
1
V
in
8
2
3
V
Control
On/Off
On/Off
out
7
Base
N/C
4
N/C
Gnd
6
Adj
5
1.0 µF
R
Figure 10. 2.0 Ampere Low Dropout Regulator
+V
in
Current Limit
Section
1000 µF
0.05
680
470
2N3906
2N3906
120 k
TIP32B
0.33
1
V
in
2
3
8
On/Off
V
out
7
4
N/C
Base
V
@ 2.0 A
MC33264
out
220
4.7
Tant
µ
F
100 µF
On/Off
N/C
0.01
R1
R2
Gnd
Adj
75 k
0.033
6
5
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
1
V
in
8
5
3
MC34164P–5
1
Main V+
V
On/Off
out
0.1
2
4
3
Memory V+
Base
MC33264
On/Off
20
N/C
Gnd
Adj
NiCad
Backup Battery
R2
3.0 k
1.0 µF
4
5
R1
1.0 k
Figure 12. RF Amplifier Supply
1.0
0.1
V
7.0 V
Battery
0.1
100 µF
200
V
Double 12
3
2
1
V
14
BB
CC
TIP32B
0.33
1
8
V
BB
V
in
2
3
8
Generator
(Voltage Tripler)
11
Gate Drive
Output
V
On/Off
out
MC33169
V
Triple
BB
1.0
7
4
Base
N/C
N/C
9
MC33264
Priority
Management
T
On Input
On/Off
x
13
On/Off
Idle Mode Input
Sense
3.0 k
Gnd
Adj
10
0.01
6
5
5.0 V @ 0.5 A
Sense
Input
6
Negative
Generator
4.7
Tant
µ
F
100 µF
Gnd
Charge
Pump
1.0 k
V
SS
Output
(–2.5 V or –4.0 V)
5
4
7
RF
Out
RF In
1.0
1N5819
Power Amplifier
100
0.22
0.1
7
MOTOROLA ANALOG IC DEVICE DATA
MC33264
OUTLINE DIMENSIONS
D SUFFIX
PLASTIC PACKAGE
CASE 751–05
(SO–8)
NOTES:
D
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.
A
ISSUE R
C
8
1
5
4
M
M
0.25
B
H
E
MILLIMETERS
B
DIM
A
A1
B
C
D
MIN
1.35
0.10
0.35
0.18
4.80
3.80
MAX
1.75
0.25
0.49
0.25
5.00
4.00
e
h X 45
A
C
SEATING
PLANE
E
e
H
h
L
1.27 BSC
0.10
5.80
0.25
0.40
0
6.20
0.50
1.25
7
A1
B
L
M
S
S
0.25
C
B
A
DM SUFFIX
PLASTIC PACKAGE
CASE 846A–02
(Micro–8)
–A–
NOTES:
ISSUE C
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.
–B–
K
4. DIMENSION B DOES NOT INCLUDE INTERLEAD
FLASH OR PROTRUSION. INTERLEAD FLASH OR
PROTRUSION SHALL NOT EXCEED 0.25 (0.010)
PER SIDE.
PIN 1 ID
G
D 8 PL
M
S
S
MILLIMETERS
INCHES
0.08 (0.003)
T
B
A
DIM
A
B
C
D
MIN
2.90
2.90
–––
MAX
3.10
3.10
1.10
0.40
MIN
MAX
0.122
0.122
0.043
0.016
0.114
0.114
–––
SEATING
PLANE
0.25
0.010
–T–
G
H
J
K
L
0.65 BSC
0.026 BSC
0.038 (0.0015)
C
0.05
0.13
4.75
0.40
0.15
0.23
5.05
0.70
0.002
0.005
0.187
0.016
0.006
0.009
0.199
0.028
L
J
H
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