IMP IMP38HC44EPA Bicmos current-mode pwm controller Datasheet

IMP38C/HC/42/3/4/5
POWER MANAGEMENT
BiCMOS Current-Mode
PWM Controllers
Key Features
◆
◆
◆
◆
◆
◆
◆
– 1MHz Operation
– No Cross-Conduction Current
– 50ns Current-Sense Delay
The IMP38C4x and IMP38HC4x are fixed frequency, high performance,
current-mode PWM controllers that are pin compatible with bipolar 384x
devices but feature improvements resulting from IMP’s BiCMOS
processing and circuit design. Notable among the improvements are zero
cross-conduction/shoot-through current, reduced start-up and operating
current, lower current-sense delay, higher frequency operation, full
supply voltage swing at the output and a 1% trimmed voltage reference.
◆
◆
◆
◆
IMP38C4x and IMP38HC4x output driver stage has zero cross-conduction
current. A proprietary output state-machine monitors each output
MOSFET and guarantees by design zero cross-conduction current. This is
an industry first for 384x PWM devices.
384x Series Pinout with BiCMOS Technology
Zero Cross-Conduction Current by Design
1MHz Operation
65ns Maximum Current-Sense Delay
120µA Maximum Start-Up Current
1.5mA Maximum Operating Current
High Output Current Drive
– 1.0A, IMP38HC4x
– 0.5A, IMP38C4x
20V Maximum Supply Voltage
2.5V, 1%, Trimmed Error Amplifier Reference
Trimmed Oscillator Discharge Current
Pin-for-Pin Enhanced Replacements for Micrel
MIC38C/HC4x and GMT38C4x/HC4x
Under-voltage lockout (UVL) performance has been improved. When
the power supply voltage is below the startup voltage, internal circuitry
puts the output into a low impedance state. The output will sink 20mA
and remain below 1.3V, well below the turn-on threshold voltage of the
external MOSFET. Even when VDD drops to zero volts, the out pin will
not rise above approximately 1.3V because the output UVLO circuit is
Block Diagrams
VDD
7 (12)
(11)
VD
+
VREF
5V
Reference
8 (14)
UVLO
–
+
–
RTCT
COMP
FB
4 (7)
6 (10)
Oscillator
OUT
1 (1)
2 (3)
–
2R
–
EA
1V
+
+
–
R
COMP
T
Q
S
Q
R
+
2.5V
Ref
(
(8)
) Pins Are 14-Pin Devices Only
3 (5)
PGND
Connection Notes
IMP38C4X, IMP38HC4X (8-Pin Devices)
GND 5
AGND (9)
ISNS
50% Maximum Duty Cycle:
IMP38C44, IMP38HC44, IMP38C45, IMP38HC45
96% Maximum Duty Cycle:
IMP38C42, IMP38HC42, IMP38C43, IMP38HC43
© 2000 IMP, Inc.
408-432-9100/www.impweb.com
38C/HC_01.eps
1
IMP38C/HC/42/3/4/5
powered through the out pin. Leakage current from the external
power MOSFETs will not force the PWM output to rise and turn
the external MOSFETs on.
For maximum application flexibility, start-up voltage ranges from
14.5V to 8.4V. Start-up current has been reduced to 120µA maximum and operating current has been reduced to 1.5mA maximum.
Current-sense propagation delay time is 35ns typical, 65ns maximum, representing an up to 75 percent reduction over other 38xx
implementations.
The IMP38C4x/IMP38HC4x are available in 8-pin and 14-pin DIP
and SO packages as well as the 8-pin MicroSO package. The 14pin devices provide separate pins for the controller power supply
and the output driver supply. This configuration maximizes
application flexibility and performance. The 14-pin package can
also dissipate more power. Devices in the compact 8-pin packages
do not have separate output drive supply connections.
Output stage drive is 0.5A for IMP38C4x devices. The high-drive
IMP38HC4x family is rated at 1.0A peak current drive.
Like conventional 384x controllers, the IMP38C4x and
IMP38HC4x controllers use the current-mode architecture for
superior load regulation, pulse-by-pulse current limiting and output MOSFET protection. All versions operate up to 20 volts.
The IMP38C4x and IMP38HC4x families operate over the –40°C
to +85°C temperature range.
Pin Configuration
SO/MicroSO/DIP
COMP 1
FB 2
IMP38C4x
IMP38HC4x
SO/DIP
COMP 1
8 VREF
7 VDD
FB 3
ISNS 3
6 OUT
RT/CT 4
5 GND
14 VREF
NC 2
13 NC
NC 4
IMP38C4x 12 VDD
IMP38HC4x 11 V
D
ISNS 5
10 OUT
38C/HC_02.eps
NC 6
9 AGND
RT/CT 7
8 PGND
38C/HC_03.eps
Pin Descriptions
Pin Number
Name
Function
8-Pin Package
14-Pin Package
1
1
COMP
2
3
FB
3
5
ISNS
4
7
RT/CT
5
8
GND/PGND
6
10
OUT
High-power, totem-pole driver output. OUT pin is actively held LOW when
VCC is below the UVLO threshold.
7
12
VDD
Supply voltage input.
8
14
VREF
5V-reference voltage output.
9
AGND
11
VD
Output driver supply voltage for 14-pin package.
2, 4, 6, 13
NC
No internal connection.
Output of the Error amplifier and input to the PWM comparator.
Inverting input of the Error Amplifier.
Current sense comparator input. It is internally limited to 1V.
Oscillator RC timing component connection. Resistor RT is connected to
VREF and capacitor CT is connected to ground. Different values of RT and
CT determine the maximum duty cycle.
Combined power and analog ground for 8-pin packaged devices and power
ground for 14-pin package.
Analog ground connection for 14-pin package.
38C-HC_t01.eps
2
408-432-9100/www.impweb.com
© 2000 IMP, Inc.
!S
IMP38C/HC/42/3/4/5
Ordering Information
IMP Ordering
Part Number
Package
IMP38C42EPA
IMP38C42EPD
IMP38C42ESA
IMP38C42ESD
IMP38C42EMA
IMP38C42/D
IMP38C43EPA
IMP38C43EPD
IMP38C43ESA
IMP38C43ESD
IMP38C43EMA
IMP38C43/D
IMP38C44EPA
IMP38C44EPD
IMP38C44ESA
IMP38C44ESD
IMP38C44EMA
IMP38C44/D
IMP38C45EPA
IMP38C45EPD
IMP38C45ESA
IMP38C45ESD
IMP38C45EMA
IMP38C45/D
IMP38HC42EPA
IMP38HC42EPD
IMP38HC42ESA
IMP38HC42ESD
IMP38HC42EMA
IMP38HC42/D
IMP38HC43EPA
IMP38HC43EPD
IMP38HC43ESA
IMP38HC43ESD
IMP38HC43EMA
IMP38HC43/D
IMP38HC44EPA
IMP38HC44EPD
IMP38HC44ESA
IMP38HC44ESD
IMP38HC44EMA
IMP38HC44/D
IMP38HC45EPA
IMP38HC45EPD
IMP38HC45ESA
IMP38HC45ESD
IMP38HC45EMA
IMP38HC45/D
8-Plastic DIP
14-Plastic DIP
8-SO
14-SO
8-MicroSO
DIE
8-Plastic DIP
14-Plastic DIP
8-SO
14-SO
8-MicroSO
DIE
8-Plastic DIP
14-Plastic DIP
8-SO
14-SO
8-MicroSO
DIE
8-Plastic DIP
14-Plastic DIP
8-SO
14-SO
8-MicroSO
DIE
8-Plastic DIP
14-Plastic DIP
8-SO
14-SO
8-MicroSO
DIE
8-Plastic DIP
14-Plastic DIP
8-SO
14-SO
8-MicroSO
DIE
8-Plastic DIP
14-Plastic DIP
8-SO
14-SO
8-MicroSO
DIE
8-Plastic DIP
14-Plastic DIP
8-SO
14-SO
8-MicroSO
DIE
Operating
Temperature
Range
Startup
Voltage
Minimum
Operating
Voltage
Maximum
Duty Cycle
Reference
Voltage
Peak Output
Current Drive
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
14.5V
14.5V
14.5V
14.5V
14.5V
9.0V
9.0V
9.0V
9.0V
9.0V
96%
96%
96%
96%
96%
2.5V
2.5V
2.5V
2.5V
2.5V
0.5A
0.5A
0.5A
0.5A
0.5A
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
8.4V
8.4V
8.4V
8.4V
8.4V
7.6V
7.6V
7.6V
7.6V
7.6V
96%
96%
96%
96%
96%
2.5V
2.5V
2.5V
2.5V
2.5V
0.5A
0.5A
0.5A
0.5A
0.5A
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
14.5V
14.5V
14.5V
14.5V
14.5V
9.0V
9.0V
9.0V
9.0V
9.0V
50%
50%
50%
50%
50%
2.5V
2.5V
2.5V
2.5V
2.5V
0.5A
0.5A
0.5A
0.5A
0.5A
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
8.4V
8.4V
8.4V
8.4V
8.4V
7.6V
7.6V
7.6V
7.6V
7.6V
50%
50%
50%
50%
50%
2.5V
2.5V
2.5V
2.5V
2.5V
0.5A
0.5A
0.5A
0.5A
0.5A
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
14.5V
14.5V
14.5V
14.5V
14.5V
9.0V
9.0V
9.0V
9.0V
9.0V
96%
96%
96%
96%
96%
2.5V
2.5V
2.5V
2.5V
2.5V
1.0A
1.0A
1.0A
1.0A
1.0A
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
8.4V
8.4V
8.4V
8.4V
8.4V
7.6V
7.6V
7.6V
7.6V
7.6V
96%
96%
96%
96%
96%
2.5V
2.5V
2.5V
2.5V
2.5V
1.0A
1.0A
1.0A
1.0A
1.0A
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
14.5V
14.5V
14.5V
14.5V
14.5V
9.0V
9.0V
9.0V
9.0V
9.0V
50%
50%
50%
50%
50%
2.5V
2.5V
2.5V
2.5V
2.5V
1.0A
1.0A
1.0A
1.0A
1.0A
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
– 40°C to 85°C
8.4V
8.4V
8.4V
8.4V
8.4V
7.6V
7.6V
7.6V
7.6V
7.6V
50%
50%
50%
50%
50%
2.5V
2.5V
2.5V
2.5V
2.5V
1.0A
1.0A
1.0A
1.0A
1.0A
38C/HC_t02.eps
For SO and MicroSO packages, append “/T” to the ordering part number for tape and reel packaging.
© 2000 IMP, Inc.
PWM Controllers
3
IMP38C/HC/42/3/4/5
Absolute Maximum Ratings
VCC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . 20V
VCC Supply Current . . . . . . . . . . . . . . . . . . . . . . 30mA
IOUT Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0A
Current-Sense and Feedback Inputs . . . . . . . . 0.3V to 5.5V
Operation Junction Temperature . . . . . . . . . . . +150°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . – 65°C to +150°C
Lead Soldering Temperature (10 seconds) . . . +300°C
Package Thermal Resistance
8-Pin Plastic DIP (θJA) . . . . . . . . . . . . . . . . . 125°C/W
8-Pin MicroSO (θJA) . . . . . . . . . . . . . . . . . . . 250°C/W
8-Pin SO (θJA) . . . . . . . . . . . . . . . . . . . . . . . . 170°C/W
14-Pin Plastic DIP (θJA) . . . . . . . . . . . . . . . . 90°C/W
14-Pin SO (θJA) . . . . . . . . . . . . . . . . . . . . . . . 145°C/W
Note: All voltages are referenced to GND.
These are stress ratings only and functional operation is not
implied. Exposure to absolute maximum ratings for prolonged
time periods may affect device reliability.
Electrical Characteristics
Unless otherwise noted, VCC = 15V, RT = 10kΩ and CT = 3.3nF. Specifications are over the – 40°C to +85°C ambient temperature range.
Bold/blue specifications indicate enhanced performance features.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
TA = +25°C, IO = 1mA
4.90
5.00
5.10
V
2
20
mV
1
25
Reference
Output voltage
VREF
12V ≤ VCC ≤ 18V, IOUT = 5µA
Line Regulation
1mA ≤ IO ≤ 20mA
Load Regulation
Temperature Stability
TCREF
Total Reference Variation
Output Noise Voltage
Line, Load, Temperature, Note 1
VN
Long Term Stability
Output Short Circuit
Note 1
mV
0.2
4.82
10Hz ≤ f ≤ 10kHz, TA = +25°C, Note 1
mV/°C
5.18
TA = 125°C, 1000 Hours, Note 1
V
µV
50
TBD
mV
– 30
– 40
– 180
mA
49
52
55
kHz
12V ≤ VCC ≤ 18V
0.2
1.0
Note 1
0.04
ISC
Oscillator Section
Initial Accuracy
fINIT
Voltage Stability
Temperature Stability
TCOSC
Discharge Current
Amplitude peak-to-peak
VOSC, P-P
TA = 25°C, Note 5
%
%/°C
VRT/CT = 2V
7.2
8.4
12.0
mA
VRT/CT peak-to-peak
1.1
1.7
2.3
V
2.45
2.50
2.55
V
1
µA
Error Amplifier Section
Input Voltage
VIN
VCOMP = 2.5V
Input Bias Current
IB
VFB = 4.5V
2V ≤ VO ≤ 4V, Note 1
65
90
dB
Unity Gain Bandwidth
UGBW
Note1
0.7
1.0
MHz
Power Supply Rejection Ratio
PSRR
mA
Open Loop Gain
AVOL
VSTART ≤ VCC ≤ VCCMAX
60
IOL
VFB = 2.7V, Vcomp = 1.1V
2
6
Output Source Current
IOH
VFB = 2.3V, Vcomp = 5.0V
– 0.5
– 1.0
VOUT High
VOH
VFB = 2.3V, RL = 15kΩ to ground
4.5
4.6
5.0
V
VOUT Low
VOL
VFB = 2.7V, RL = 15kΩ to VREF
0.30
0.50
V
Output Sink Current
4
–1
408-432-9100/www.impweb.com
dB
mA
© 2000 IMP, Inc.
!S
IMP38C/HC/42/3/4/5
Electrical Characteristics
Unless otherwise noted, VCC = 15V, RT = 10kΩ and CT = 3.3nF. Specifications are over the – 40°C to +85°C ambient temperature range.
Bold/blue specifications indicate enhanced performance features.
Parameter
Symbol
Current Sense
Gain
Over Current Protection Threshold
Power Supply Rejection Ratio
Input Bias Current
Delay to Output
Output
IMP38C4x
ON Resistance, High
ON Resistance, Low
IMP38HC4x
ON Resistance, High
ON Resistance, Low
Peak Drive Current
IMP38C4x Rise Time
IMP38C4x Fall Time
IMP38HC4x Rise Time
IMP38HC4x Fall Time
Shoot-through Current
Undervoltage Lockout
Start Threshold
AVOL
PSRR
IB
TPD
Min
Typ
Max
Units
Notes 1, 2 and 3
Vcomp = max, Note 2
VSTART ≤ VCC ≤ 18V
2.90
0.9
3.00
0.98
70
– 0.1
50
3.10
1.1
V/V
V
dB
µA
ns
VFB = 0V, ISNS 0V to 2V, CL = 1nF
ISOURCE = 0.2A
ISINK = 0.2A
20
11
Ω
RDS (ON)
ISOURCE = 0.2A
ISINK = 0.2A
HC devices
H devices
TA = 25°C, CL = 1nF
TA = 25°C, CL = 1nF
TA = 25°C, CL = 1nF
TA = 25°C, CL = 1nF
10
5.5
Ω
TR
TF
TR
TF
Pulse Width Modulator
Maximum Duty Cycle
Maximum Duty Cycle
Minimum Duty Cycle
Supply Current
Start-Up Current
ICC
1.0
0.5
A
40
30
20
15
0
70
50
50
40
ns
ns
ns
ns
mA
15.5
9.0
10
8.2
V
IMP38C42/4, IMP38HC42/4
IMP38C43/5, IMP38HC43/5
IMP38C42/4, IMP38HC42/4
IMP38C43/5, IMP38HC43/5
13.5
7.8
8
7.0
14.5
8.4
9
7.6
IMP38C42/3, IMP38HC42/3,
IMP38C44/5, IMP38HC44/5
94
48
96
50
VCC = 13V for IMP38C42/44, IMP38HC42/44
VCC = 7.5V for IMP38C43/45, IMP38HC43/45
VFB = VIS = 0
Note 1. Guaranteed by design. Not 100% tested in production.
Note 2. Measured at trip point of VFB = 0V.
Note 3. Gain is defined as:
A=
– 2.0
65
RDS (ON)
Minimum Operating Voltage
Operating Current
Conditions
V
0
%
%
%
95
120
µA
0.5
1.5
mA
Note 4. Adjust VCC above the start threshold before setting at 15V.
Note 5. Output frequency equals the oscillator frequency for
IMP38C42/3 and IMP38HC42/3 devices. Output frequency
equals one-half the oscillator frequency for IMP38C44/5 and
IMP38HC44/5 devices.
∆VCOMP
, 0 ≤ VCS ≤ 0.8V
∆VCS
Table 1. Startup and Operating Voltage Selection Guide
Duty Cycle
0% to 96%
0% to 50%
UVLO Thresholds
Start-up at 8.4V
Start-up at 14.5V
Operating Minimum = 7.6V
Operating Minimum = 9.0V
IMP38C43/HC43
IMP38C45/HC45
IMP38C42/HC42
IMP38C44/HC44
38C/HC_t03.eps
© 2000 IMP, Inc.
PWM Controllers
5
IMP38C/HC/42/3/4/5
Application Information
The IMP38C and IMP38HC devices are compatible with generic
384x PWM devices. The following discussion highlights the differences and advantages of the IMP ‘C’ and ‘HC’ designs.
Start-up Current
IMP’s BiCMOS process allows for substantial reduction in the
start-up current. Typical start-up current is 95µA, with a maximum limit of 120µA. Low start-up current allows high resistance,
lower-wattage, start-up resistors to supply controller start-up
power.
Transient Protection
Good high-frequency layout practices should be followed. Avoid
long printed-circuit traces and component leads. Locate oscillator
and compensation components near the IC. Avoid capacitive and
inductive coupling of the switching waveform into the
high-impedance inputs of the error amplifier, oscillator, and
current-sense amplifier. VREF and VCC stability will be aided by
using high-frequency decoupling capacitors.
Undervoltage Lockout
Several different thresholds are available.
Operating Current
Operating current has been reduced to 1.5mA maximum.
Compared to the 11mA needed for a typical bipolar controller and
6mA for competitive BiCMOS controllers, IMP's low operating
current allows the controller to run cooler and with better efficiency. In addition, the VCC hold-up capacitance (used during
start-up) can be reduced.
Output Driver
The IMP38HC4x/38C4x CMOS output stage drives external
power MOSFETs to the full supply voltage. Low ON-resistance
and high peak current drive combine to give greater than 1000pF
gate capacitance drive capability. Rise and fall time requirements
may dictate the appropriate value of output capacitance. Within
the restrictions of output capacity and controller power dissipation, switching frequencies can exceed 1MHz.
The CMOS output stage “break-before-make” action is guaranteed by design and insures that no cross-conduction current will
flow. This minimizes heat dissipation, increases efficiency and
enhances reliability.
Oscillator Operation
Two external components, RT and CT, set the switching frequency.
Undervoltage Lockout Thresholds
Start-up at 8.4V
Operating Minimum = 7.6V
Start-up at 14.5V
Operating Minimum = 9.0V
IMP38C43/HC43
IMP38C45/HC45
IMP38C42/HC42
IMP38C44/HC44
38C/HC_t04.eps
Under-voltage lockout (UVL) performance has been improved.
When the power supply voltage is below the startup voltage,
internal circuitry puts the output into a low impedance state and
sets the output to zero. The output will sink up to 20mA in this
controlled state and remain below 1.3V, well below the turn-on
threshold voltage of the external MOSFET.
With the IMP38C/HC4x output stage design, leakage current
from the external power MOSFETs will not force the PWM output
to rise and turn the external MOSFET on.
Even when VDD drops to zero volts, the OUT pin will not rise
above approximately 1.3V because the UVLO circuit is powered
through the OUT pin.
The IMP output stage performance in UVL mode, while sinking
20mA, is shown in Figure 2.
With VCC = 14V, RT = 10k and CT = 3.3nF, nominal switching
frequency is 50kHz.
VOUT While Sinking 20mA
2.0
IMP38C/HC4x
VREF
frequency [ Hz ] =
1.73
RT [Ω] × CT [ F ]
1.5
RT
RT/CT
CT
Output (V)
IMP38C4x
IMP38HC4x
1.0
0.5
GND
38C/HC_07.eps
0
Figure 1. Oscillator Component Selection
0
1
2
3
4
5
VDD (V)
6
7
8
9
38C/HC_05b.eps
Figure 2. Output Stage Performance in UVL Mode
6
408-432-9100/www.impweb.com
© 2000 IMP, Inc.
!S
IMP38C/HC/42/3/4/5
Application Information
(11)
VD
+
UVLO
–
+
–
6 (10)
2R
–
1V
R
COMP
T
Q
S
Q
OUT
UVL
Protection
R
+
(8)
PGND
Connection Notes
3 (5)
IMP38C4X, IMP38HC4X (8-Pin Devices)
GND 5
AGND (9)
50% Maximum Duty Cycle:
IMP38C44, IMP38HC44, IMP38C45, IMP38HC45
ISNS
96% Maximum Duty Cycle:
IMP38C42, IMP38HC42, IMP38C43, IMP38HC43
(
) Pins Are 14-Pin Devices Only
38C/HC_06.eps
Figure 3. UVL Protection Circuit
© 2000 IMP, Inc.
PWM Controllers
7
IMP38C/HC/42/3/4/5
Package Dimensions
SO (8-Pin)
Inches
a
+
L
D
C
D
A
e
0.10mm
0.004in
Max
A
A1
A2
b
C
D
e
E
E1
L
a
–––––
0.0433
0.0020
0.0059
0.0295
0.0374
0.0098
0.0157
0.0051
0.0091
0.1142
0.1220
0.0256 BSC
0.193 BSC
0.1142
0.1220
0.0157
0.0276
0°
6°
SO (8-Pin)
0°– 8°
L
E
Max
H
––––
1.10
0.050
0.15
0.75
0.95
0.25
0.40
0.13
0.23
2.90
3.10
0.65 BSC
4.90 BSC
2.90
3.10
0.40
0.70
0°
6°
SO (8-Pin)**
MicroSO (8-Pin).eps
A1
b
Min
MicroSO (8-Pin)*
E1 E
A2
Millimeters
Min
A
A1
B
C
e
E
H
L
D
0.053
0.004
0.013
0.007
0.069
0.010
0.020
0.010
1.35
0.10
0.33
0.19
0.157
0.244
0.050
0.197
3.80
5.80
0.40
4.80
0.050
0.150
0.228
0.016
0.189
1.75
0.25
0.51
0.25
1.27
4.00
6.20
1.27
2.00
Plastic DIP (8-Pin)***
C
D
A
e
B
A1
SO (8-Pin).eps
Plastic DIP (8-Pin)
D1
E
D
E1
A A2
L A1
A
–––––
0.210
A1
0.015
–––––
A2
0.115
0.195
b
0.014
0.022
b2
0.045
0.070
b3
0.030
0.045
D
0.355
0.400
D1
0.005
–––––
E
0.300
0.325
E1
0.240
0.280
e
0.100
–––––
eA
0.300
–––––
eB
–––––
0.430
eC
–––––
0.060
L
0.115
0.150
* JEDEC Drawing MO-187AA
** JEDEC Drawing MS-112AA
*** JEDEC Drawing MS-001BA
––––
0.38
2.92
0.36
1.14
0.80
9.02
0.13
7.62
6.10
5.33
–––––
4.95
0.56
1.78
1.14
10.16
–––––
8.26
7.11
2.54
7.62
–––––
10.92
2.92
3.81
38C/HC_t05.at3
0°–15°
e
C
b2
b
eA
eB
Plastic DIP (8-Pin)a.eps
8
408-432-9100/www.impweb.com
© 2000 IMP, Inc.
!S
IMP38C/HC/42/3/4/5
Package Dimensions
SO (14-Pin)
Inches
Millimeters
Min
Max
0.0926
0.0040
0.013
0.0091
0.3465
0.214
0.1043
0.118
0.020
0.0125
0.3622
0.2992
Min
Max
2.35
0.10
0.33
0.23
8.80
7.40
2.65
0.30
0.51
0.32
9.20
7.60
SO (14-Pin)*
E
A
A1
B
C
D
E
H
D
0°– 8°
A
C
e
L
B
A1
SO (16-Pin).eps
D1
E
D
A
A1
e1
B1
B
L
H
L
0.050 BSC
0.394
0.016
1.27 BSC
0.419
0.050
10.00
0.40
10.65
1.27
Plastic DIP (14-Pin)**
A
0.155
0.200
A1
0.20
0.50
B
0.014
0.020
B1
0.050
0.065
C
0.008
0.012
D
0.745
0.770
E
0.300
0.325
E1
0.240
0.260
e1
0.100 TYP
eA
0.300 TYP
L
0.100
–––––
* JEDEC Drawing MS-013 AF
** JEDEC Drawing MO-001 AA-AB
Plastic DIP (14-Pin)
E1
e
3.94
0.51
0.356
1.27
0.204
18.93
7.62
6.10
5.08
1.27
0.508
1.65
0.304
19.55
8.25
6.60
2.54 TYP
7.62 TYP
3.18
3.81
38C/HC_t06.at3
0°–15°
C
eA
Plastic DIP (14-Pin).eps
© 2000 IMP, Inc.
PWM Controllers
9
IMP38C/HC/42/3/4/5
IMP, Inc.
Corporate Headquarters
2830 N. First Street
San Jose, CA 95134-2071
Tel: 408-432-9100
Fax: 408-434-0335
e-mail: [email protected]
http://www.impweb.com
The IMP logo is a registered trademark of IMP, Inc.
All other company and product names are trademarks of their respective owners.
© 2000 IMP, Inc.
Printed in USA
Publication #: 3001
Revision:
D
Issue Date:
08/30/00
Type:
Preliminary