Motorola Corp MC33167D2T

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Item Description: IC REG BUCK BOOST INV ADJ D2PAK

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Technical Document


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Order this document by MC34167/D
SEMICONDUCTOR
TECHNICAL DATA
POWER SWITCHING
REGULATORS
T SUFFIX
PLASTIC PACKAGE
CASE 314D
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
Pin 1. Voltage Feedback Input
2. Switch Output
3. Ground
4. Input Voltage/V
CC
5. Compensation/Standby
TH SUFFIX
PLASTIC PACKAGE
CASE 314A
TV SUFFIX
PLASTIC PACKAGE
CASE 314B
Heatsink surface (shown as terminal 6
in case outline drawing) is connected to Pin 3.
Heatsink surface connected to Pin 3.
D2T SUFFIX
PLASTIC PACKAGE
CASE 936A
(D
2
PAK)
5
1
5
1
5
1
5
1
MC34167D2T
MC34167T
MC34167TH
MC34167TV
T
A
= 0° to + 70°C
Surface Mount
Straight Lead
Horiz. Mount
Vertical Mount
MC33167D2T
MC33167T
MC33167TH
MC33167TV
T
A
= –40° to +85°C
Surface Mount
Straight Lead
Horiz. Mount
Vertical Mount
1
MOTOROLA ANALOG IC DEVICE DATA
The MC34167, MC33167 series are high performance fixed frequency
power switching regulators that contain the primary functions required for
dc–to–dc converters. This series was specifically designed to be
incorporated in step–down and voltage–inverting configurations with a
minimum number of external components and can also be used cost
effectively in step–up applications.
These devices consist of an internal temperature compensated
reference, fixed frequency oscillator with on–chip timing components,
latching pulse width modulator for single pulse metering, high gain error
amplifier, and a high current output switch.
Protective features consist of cycle–by–cycle current limiting,
undervoltage lockout, and thermal shutdown. Also included is a low power
standby mode that reduces power supply current to 36 µA.
Output Switch Current in Excess of 5.0 A
Fixed Frequency Oscillator (72 kHz) with On–Chip Timing
Provides 5.05 V Output without External Resistor Divider
Precision 2% Reference
0% to 95% Output Duty Cycle
Cycle–by–Cycle Current Limiting
Undervoltage Lockout with Hysteresis
Internal Thermal Shutdown
Operation from 7.5 V to 40 V
Standby Mode Reduces Power Supply Current to 36 µA
Economical 5–Lead TO–220 Package with Two Optional Leadforms
Also Available in Surface Mount D
2
PAK Package
Simplified Block Diagram
(Step Down Application)
EA
V
O
I
LIMIT
V
in
4
2
S
Q
R
UVLO
3
5
L
5.05 V/5.0 A
Reference
Thermal
PWM
Oscillator
1
This device contains 143 active transistors.
Motorola, Inc. 1996 Rev 3
MC34167 MC33167
2
MOTOROLA ANALOG IC DEVICE DATA
MAXIMUM RATINGS
Rating Symbol Value Unit
Power Supply Input Voltage V
CC
40 V
Switch Output Voltage Range V
O(switch)
–2.0 to + V
in
V
Voltage Feedback and Compensation Input
Voltage Range
V
FB,
V
Comp
–1.0 to + 7.0 V
Power Dissipation
Case 314A, 314B and 314D (T
A
= +25°C) P
D
Internally Limited W
Thermal Resistance, Junction–to–Ambient θ
JA
65 °C/W
Thermal Resistance, Junction–to–Case θ
JC
5.0 °C/W
Case 936A (D
2
PAK) (T
A
= +25°C) P
D
Internally Limited W
Thermal Resistance, Junction–to–Ambient θ
JA
70 °C/W
Thermal Resistance, Junction–to–Case θ
JC
5.0 °C/W
Operating Junction Temperature T
J
+150 °C
Operating Ambient Temperature (Note 3)
MC34167
MC33167
T
A
0 to + 70
– 40 to + 85
°C
Storage Temperature Range T
stg
– 65 to +150 °C
ELECTRICAL CHARACTERISTICS (V
CC
= 12 V, for typical values T
A
= +25°C, for min/max values T
A
is the operating ambient
temperature range that applies [Notes 2, 3], unless otherwise noted.)
Characteristic
Symbol Min Typ Max Unit
OSCILLATOR
Frequency (V
CC
= 7.5 V to 40 V) T
A
= +25°C
T
A
= T
low
to T
high
f
OSC
65
62
72
79
81
kHz
ERROR AMPLIFIER
Voltage Feedback Input Threshold T
A
=+ 25°C
T
A
= T
low
to T
high
V
FB(th)
4.95
4.85
5.05
5.15
5.20
V
Line Regulation (V
CC
= 7.5 V to 40 V, T
A
= +25°C) Reg
line
0.03 0.078 %/V
Input Bias Current (V
FB
= V
FB(th)
+ 0.15 V) I
IB
0.15 1.0 µA
Power Supply Rejection Ratio (V
CC
= 10 V to 20 V, f = 120 Hz) PSRR 60 80 dB
Output Voltage Swing High State (I
Source
= 75 µA, V
FB
= 4.5 V)
Low State (I
Sink
= 0.4 mA, V
FB
= 5.5 V)
V
OH
V
OL
4.2
4.9
1.6
1.9
V
PWM COMPARATOR
Duty Cycle (V
CC
= 20 V) Maximum (V
FB
= 0 V)
Minimum (V
Comp
= 1.9 V)
DC
(max)
DC
(min)
92
0
95
0
100
0
%
SWITCH OUTPUT
Output Voltage Source Saturation (V
CC
= 7.5 V, I
Source
= 5.0 A) V
sat
(V
CC
–1.5) (V
CC
–1.8) V
Off–State Leakage (V
CC
= 40 V, Pin 2 = Gnd) I
sw(off)
0 100 µA
Current Limit Threshold (V
CC
= 7.5 V) I
pk(switch)
5.5 6.5 8.0 A
Switching Times (V
CC
= 40 V, I
pk
= 5.0 A, L = 225 µH, T
A
= +25°C)
Output Voltage Rise Time
Output Voltage Fall Time
t
r
t
f
100
50
200
100
ns
UNDERVOLTAGE LOCKOUT
Startup Threshold (V
CC
Increasing, T
A
= +25°C) V
th(UVLO)
5.5 5.9 6.3 V
Hysteresis (V
CC
Decreasing, T
A
= +25°C) V
H(UVLO)
0.6 0.9 1.2 V
TOTAL DEVICE
Power Supply Current (T
A
= +25°C )
Standby (V
CC
= 12 V, V
Comp
< 0.15 V)
Operating (V
CC
= 40 V, Pin 1 = Gnd for maximum duty cycle)
I
CC
36
40
100
60
µA
mA
NOTES: 1. Maximum package power dissipation limits must be observed to prevent thermal shutdown activation.
2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
3. T
low
=0°C for MC34167 T
high
= + 70°C for MC34167
=–40°C for MC33167 = + 85°C for MC33167
MC34167 MC33167
3
MOTOROLA ANALOG IC DEVICE DATA
Figure 1. Voltage Feedback Input Threshold
versus Temperature
Figure 2. Voltage Feedback Input Bias
Current versus Temperature
Figure 3. Error Amp Open Loop Gain and
Phase versus Frequency
Figure 4. Error Amp Output Saturation
versus Sink Current
Figure 5. Oscillator Frequency Change
versus Temperature
Figure 6. Switch Output Duty Cycle
versus Compensation Voltage
–20
A
VOL
, OPEN LOOP VOLTAGE GAIN (dB)
10 M10
f, FREQUENCY (Hz)
0
30
60
90
120
150
180
100 1.0 k 10 k 100 k 1.0 M
0
20
40
60
80
100
, EXCESS PHASE (DEGREES)
φ
Gain
Phase
–12
–55
T
A
, AMBIENT TEMPERATURE (
°
C)
– 25 0 25 50 75 100 125
– 8.0
– 4.0
0
4.0
V
CC
= 12 V
, OSCILLATOR FREQUENCY CHANGE (%)
OSC
f
4.85
V
FB(th)
, VOLTAGE FEEDBACK INPUT THRESHOLD (V)
T
A
, AMBIENT TEMPERATURE (
°
C)
4.93
5.01
5.09
5.17
5.25
– 55 25 0 25 50 75 100 125
V
CC
= 12 V
0
I
IB
, INPUT BIAS CURRENT (nA)
T
A
, AMBIENT TEMPERATURE (
°
C)
20
40
60
80
100
– 55 – 25 0 25 50 75 100 125
V
sat
, OUTPUT SATURATION VOLTAGE (V)
2.00
I
Sink
, OUTPUT SINK CURRENT (mA)
0.4 0.8 1.2 1.6
0
0.4
0.8
1.2
1.6
2.0
V
CC
= 12 V
V
FB
= 5.5 V
T
A
= +25
°
C
DC, SWITCH OUTPUT DUTY CYCLE (%)
1.5
V
Comp
, COMPENSATION VOLTAGE (V)
2.0 2.5 3.0 3.5 4.0
0
20
40
60
80
100
V
CC
= 12 V
T
A
= +25
°
C
4.5
V
CC
= 12 V
V
Comp
= 3.25 V
R
L
= 100 k
T
A
= +25
°
C
V
FB(th)
Max = 5.15 V
V
FB(th)
Min = 4.95 V
V
FB(th)
Typ = 5.05 V
V
CC
= 12 V
V
FB
= V
FB(th)
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