IMP38HC43ESD/T [A1PROS]
Switching Regulator/Controller, Current-mode, 1A, BICMOS, PDSO14;
| 型号： | IMP38HC43ESD/T |
| 厂家： | 
A1 PROS CO., LTD. |
| 描述： | Switching Regulator/Controller, Current-mode, 1A, BICMOS, PDSO14 信息通信管理 光电二极管 |
| 文件： | 总10页 (文件大小：160K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IMP38C/HC/42/3/4/5
P
OWER
M
ANAGEMENT
Key Features
BiCMOS Current-Mode
PWM Controllers
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
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
– 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.
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
7 (12)
VDD
(11)
VD
+
5V
8 (14)
VREF
UVLO
Reference
–
+
–
4 (7)
1 (1)
2 (3)
6 (10)
OUT
RTCT
COMP
FB
Oscillator
T
Q
Q
–
+
2R
S
R
–
EA
1V
COMP
+
–
+
R
2.5V
Ref
(8)
PGND
Connection Notes
3 (5)
(
) Pins Are 14-Pin Devices Only
IMP38C4X, IMP38HC4X (8-Pin Devices)
50% Maximum Duty Cycle:
IMP38C44, IMP38HC44, IMP38C45, IMP38HC45
GND 5 ISNS
AGND (9)
96% Maximum Duty Cycle:
IMP38C42, IMP38HC42, IMP38C43, IMP38HC43
38C/HC_01.eps
© 2000 IMP, Inc.
408-432-9100/www.impweb.com
1
IMP38C/HC/42/3/4/5
powered through the out pin. Leakage current from the external For maximum application flexibility, start-up voltage ranges from
power MOSFETs will not force the PWM output to rise and turn 14.5V to 8.4V. Start-up current has been reduced to 120µA maxi-
the external MOSFETs on.
mum and operating current has been reduced to 1.5mA maximum.
Current-sense propagation delay time is 35ns typical, 65ns maxi- The IMP38C4x/IMP38HC4x are available in 8-pin and 14-pin DIP
mum, representing an up to 75 percent reduction over other 38xx and SO packages as well as the 8-pin MicroSO package. The 14-
implementations.
pin 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
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 do not have separate output drive supply connections.
IMP38HC4x controllers use the current-mode architecture for
The IMP38C4x and IMP38HC4x families operate over the –40°C
superior load regulation, pulse-by-pulse current limiting and out-
to +85°C temperature range.
put MOSFET protection. All versions operate up to 20 volts.
Pin Configuration
SO/MicroSO/DIP
SO/DIP
COMP
NC
1
2
3
4
5
6
7
14 V
REF
COMP
FB
1
2
3
4
8
7
6
5
V
V
REF
DD
IMP38C4x
IMP38HC4x
13 NC
12 V
FB
IMP38C4x
IMP38HC4x
DD
ISNS
RT/CT
OUT
NC
11 V
D
GND
ISNS
NC
10 OUT
38C/HC_02.eps
9
8
AGND
RT/CT
PGND
38C/HC_03.eps
Pin Descriptions
Pin Number
Name
Function
8-Pin Package
14-Pin Package
1
2
3
1
3
5
COMP
FB
Output of the Error amplifier and input to the PWM comparator.
Inverting input of the Error Amplifier.
ISNS
Current sense comparator input. It is internally limited to 1V.
Oscillator RC timing component connection. Resistor RT is connected to
4
7
RT/CT
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.
5
6
8
GND/PGND
OUT
High-power, totem-pole driver output. OUT pin is actively held LOW when
VCC is below the UVLO threshold.
10
7
8
12
VDD
VREF
AGND
VD
Supply voltage input.
14
5V-reference voltage output.
9
11
Analog ground connection for 14-pin package.
Output driver supply voltage for 14-pin package.
No internal connection.
2, 4, 6, 13
NC
38C-HC_t01.eps
!S
2
408-432-9100/www.impweb.com
© 2000 IMP, Inc.
IMP38C/HC/42/3/4/5
Ordering Information
Operating
Temperature
Range
–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
Minimum
Operating
Voltage
IMP Ordering
Part Number
Startup
Voltage
Maximum
Duty Cycle
Reference
Voltage
Peak Output
Package
8-Plastic DIP
14-Plastic DIP
8-SO
Current Drive
IMP38C42EPA
IMP38C42EPD
IMP38C42ESA
IMP38C42ESD
IMP38C42EMA
IMP38C42/D
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
14-SO
8-MicroSO
DIE
IMP38C43EPA
IMP38C43EPD
IMP38C43ESA
IMP38C43ESD
IMP38C43EMA
IMP38C43/D
8-Plastic DIP
14-Plastic DIP
8-SO
–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
14-SO
8-MicroSO
DIE
IMP38C44EPA
IMP38C44EPD
IMP38C44ESA
IMP38C44ESD
IMP38C44EMA
IMP38C44/D
8-Plastic DIP
14-Plastic DIP
8-SO
–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
14-SO
8-MicroSO
DIE
IMP38C45EPA
IMP38C45EPD
IMP38C45ESA
IMP38C45ESD
IMP38C45EMA
IMP38C45/D
8-Plastic DIP
14-Plastic DIP
8-SO
–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
14-SO
8-MicroSO
DIE
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
–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
14-SO
8-MicroSO
DIE
8-Plastic DIP
14-Plastic DIP
8-SO
–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
14-SO
8-MicroSO
DIE
8-Plastic DIP
14-Plastic DIP
8-SO
–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
14-SO
8-MicroSO
DIE
8-Plastic DIP
14-Plastic DIP
8-SO
–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
14-SO
8-MicroSO
DIE
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
Reference
Output voltage
VREF
TA = +25°C, IO = 1mA
4.90
5.00
2
5.10
20
V
mV
mV
mV/°C
V
Line Regulation
12V ≤ VCC ≤ 18V, IOUT = 5µA
1mA ≤ IO ≤ 20mA
Load Regulation
1
25
Temperature Stability
Total Reference Variation
Output Noise Voltage
Long Term Stability
Output Short Circuit
Oscillator Section
Initial Accuracy
TCREF
Note 1
0.2
Line, Load, Temperature, Note 1
10Hz ≤ f ≤ 10kHz, TA = +25°C, Note 1
TA = 125°C, 1000 Hours, Note 1
4.82
5.18
VN
50
µV
TBD
mV
mA
ISC
–30
–40
–180
fINIT
TA = 25°C, Note 5
12V ≤ VCC ≤ 18V
Note 1
49
52
0.2
0.04
8.4
1.7
55
kHz
%
Voltage Stability
1.0
Temperature Stability
Discharge Current
Amplitude peak-to-peak
Error Amplifier Section
Input Voltage
TCOSC
%/°C
mA
V
VRT/CT = 2V
7.2
1.1
12.0
2.3
VOSC, P-P
VRT/CT peak-to-peak
VIN
IB
VCOMP = 2.5V
2.45
–1
2.50
2.55
V
µA
dB
MHz
dB
mA
mA
V
Input Bias Current
Open Loop Gain
VFB = 4.5V
1
AVOL
UGBW
PSRR
IOL
2V ≤ VO ≤ 4V, Note 1
Note1
65
90
Unity Gain Bandwidth
Power Supply Rejection Ratio
Output Sink Current
Output Source Current
VOUT High
0.7
60
1.0
VSTART ≤ VCC ≤ VCCMAX
VFB = 2.7V, Vcomp = 1.1V
VFB = 2.3V, Vcomp = 5.0V
VFB = 2.3V, RL = 15kΩ to ground
VFB = 2.7V, RL = 15kΩ to VREF
2
6
IOH
–0.5
4.5
–1.0
4.6
VOH
VOL
5.0
VOUT Low
0.30
0.50
V
!S
4
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© 2000 IMP, Inc.
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 Conditions
Min
Typ
Max Units
Current Sense
Gain
AVOL
Notes 1, 2 and 3
2.90
3.00
0.98
70
3.10
V/V
V
Over Current Protection Threshold
Power Supply Rejection Ratio
Input Bias Current
Delay to Output
Output
Vcomp = max, Note 2
VSTART ≤ VCC ≤ 18V
0.9
1.1
PSRR
IB
dB
µA
ns
–0.1
50
–2.0
TPD
VFB = 0V, ISNS 0V to 2V, CL = 1nF
65
IMP38C4x
ON Resistance, High
ON Resistance, Low
RDS (ON)
ISOURCE = 0.2A
ISINK = 0.2A
20
11
Ω
IMP38HC4x
ON Resistance, High
ON Resistance, Low
RDS (ON)
ISOURCE = 0.2A
ISINK = 0.2A
10
5.5
Ω
Peak Drive Current
HC devices
H devices
1.0
0.5
A
IMP38C4x Rise Time
IMP38C4x Fall Time
IMP38HC4x Rise Time
IMP38HC4x Fall Time
Shoot-through Current
Undervoltage Lockout
Start Threshold
TR
TF
TR
TF
TA = 25°C, CL = 1nF
TA = 25°C, CL = 1nF
TA = 25°C, CL = 1nF
TA = 25°C, CL = 1nF
40
30
20
15
0
70
50
50
40
ns
ns
ns
ns
mA
IMP38C42/4, IMP38HC42/4
IMP38C43/5, IMP38HC43/5
13.5
7.8
14.5
8.4
15.5
9.0
V
V
Minimum Operating Voltage
IMP38C42/4, IMP38HC42/4
IMP38C43/5, IMP38HC43/5
8
7.0
9
7.6
10
8.2
Pulse Width Modulator
Maximum Duty Cycle
Maximum Duty Cycle
Minimum Duty Cycle
Supply Current
IMP38C42/3, IMP38HC42/3,
94
96
%
%
%
IMP38C44/5, IMP38HC44/5
48
50
0
Start-Up Current
VCC = 13V for IMP38C42/44, IMP38HC42/44
VCC = 7.5V for IMP38C43/45, IMP38HC43/45
95
120
1.5
µA
Operating Current
ICC
VFB = VIS = 0
0.5
mA
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:
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.
∆V
A =
COMP ,0 ≤ VCS ≤ 0.8V
∆V
CS
Table 1. Startup and Operating Voltage Selection Guide
UVLO Thresholds
Start-up at 8.4V
Operating Minimum = 7.6V
Start-up at 14.5V
Duty Cycle
0% to 96%
0% to 50%
Operating Minimum = 9.0V
IMP38C43/HC43
IMP38C42/HC42
IMP38C45/HC45
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 dif-
ferences and advantages of the IMP ‘C’ and ‘HC’ designs.
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.
Start-up Current
IMP’s BiCMOS process allows for substantial reduction in the
start-up current. Typical start-up current is 95µA, with a maxi-
mum limit of 120µA. Low start-up current allows high resistance,
lower-wattage, start-up resistors to supply controller start-up
power.
Undervoltage Lockout
Several different thresholds are available.
Operating Current
Undervoltage Lockout Thresholds
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 effi-
ciency. In addition, the VCC hold-up capacitance (used during
start-up) can be reduced.
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.
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 dissipa-
tion, switching frequencies can exceed 1MHz.
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.
The CMOS output stage “break-before-make” action is guaran-
teed by design and insures that no cross-conduction current will
flow. This minimizes heat dissipation, increases efficiency and
enhances reliability.
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.
Oscillator Operation
Two external components, RT and CT, set the switching frequency.
With VCC = 14V, RT = 10k and CT = 3.3nF, nominal switching
frequency is 50kHz.
VOUT While Sinking 20mA
2.0
IMP38C/HC4x
VREF
1.5
1.0
0.5
0
IMP38C4x
RT
IMP38HC4x
RT/CT
1.73
frequency Hz =
[
]
RT Ω × CT F
[
]
[ ]
CT
GND
38C/HC_07.eps
0
1
2
3
4
5
6
7
8
9
VDD (V)
38C/HC_05b.eps
Figure 1. Oscillator Component Selection
Figure 2. Output Stage Performance in UVL Mode
!S
6
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© 2000 IMP, Inc.
IMP38C/HC/42/3/4/5
Application Information
(11)
VD
+
UVLO
–
+
–
6 (10)
OUT
T
Q
Q
2R
S
R
–
UVL
Protection
1V
COMP
+
R
(8)
PGND
Connection Notes
3 (5)
IMP38C4X, IMP38HC4X (8-Pin Devices)
50% Maximum Duty Cycle:
IMP38C44, IMP38HC44, IMP38C45, IMP38HC45
GND 5 ISNS
AGND (9)
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
Min
Millimeters
Min Max
MicroSO (8-Pin)*
Max
a
A
A1
A2
b
–––––
0.0020
0.0295
0.0098
0.0051
0.1142
0.0433
0.0059
0.0374
0.0157
0.0091
0.1220
––––
1.10
0.15
0.95
0.40
0.23
3.10
0.050
0.75
0.25
0.13
2.90
E1
E
C
D
e
0.0256 BSC
0.193 BSC
0.65 BSC
4.90 BSC
L
E
D
C
E1
L
0.1142
0.1220
0.0276
6°
2.90
0.40
0°
3.10
0.70
6°
A2
0.0157
A
a
0°
0.10mm
0.004in
e
MicroSO (8-Pin).eps
SO (8-Pin)**
A1
b
A
A1
B
0.053
0.004
0.013
0.007
0.069
0.010
0.020
0.010
1.35
0.10
0.33
0.19
1.75
0.25
0.51
0.25
SO (8-Pin)
0°– 8°
C
e
0.050
1.27
L
E
0.150
0.228
0.016
0.189
0.157
0.244
0.050
0.197
3.80
5.80
0.40
4.80
4.00
6.20
1.27
2.00
H
L
H
E
D
Plastic DIP (8-Pin)***
A
A1
A2
b
–––––
0.015
0.115
0.014
0.045
0.030
0.355
0.005
0.300
0.240
0.100
0.300
–––––
–––––
0.115
0.210
–––––
0.195
0.022
0.070
0.045
0.400
–––––
0.325
0.280
–––––
–––––
0.430
0.060
0.150
––––
0.38
2.92
0.36
1.14
0.80
9.02
0.13
7.62
6.10
5.33
–––––
4.95
C
D
0.56
A
b2
b3
D
1.78
1.14
e
SO (8-Pin).eps
B
A1
10.16
–––––
8.26
D1
E
Plastic DIP (8-Pin)
E1
e
7.11
D1
2.54
7.62
eA
eB
eC
L
–––––
10.92
3.81
E
2.92
D
38C/HC_t05.at3
E1
* JEDEC Drawing MO-187AA
** JEDEC Drawing MS-112AA
*** JEDEC Drawing MS-001BA
A2
A1
A
L
0°–15°
e
C
b2
eA
eB
b
Plastic DIP (8-Pin)a.eps
!S
8
408-432-9100/www.impweb.com
© 2000 IMP, Inc.
IMP38C/HC/42/3/4/5
Package Dimensions
SO (14-Pin)
Inches
Min
Millimeters
Max
Min
Max
SO (14-Pin)*
0.1043
A
A1
B
0.0926
0.0040
0.013
2.35
0.10
0.33
0.23
8.80
7.40
2.65
0.30
0.51
0.32
9.20
7.60
H
E
0.118
0.020
C
D
E
0.0091
0.3465
0.214
0.0125
0.3622
0.2992
D
e
0.050 BSC
1.27 BSC
0°– 8°
A
H
L
0.394
0.016
0.419
0.050
10.00
0.40
10.65
1.27
C
L
e
B
SO (16-Pin).eps
A1
Plastic DIP (14-Pin)**
A
A1
B
0.155
0.20
0.200
0.50
3.94
0.51
5.08
1.27
Plastic DIP (14-Pin)
0.014
0.050
0.008
0.745
0.300
0.240
0.020
0.065
0.012
0.770
0.325
0.260
0.356
1.27
0.508
1.65
B1
C
D1
0.204
18.93
7.62
0.304
19.55
8.25
D
E1
E
E
E1
e1
eA
L
6.10
6.60
0.100 TYP
0.300 TYP
0.100 –––––
2.54 TYP
7.62 TYP
D
3.18
3.81
38C/HC_t06.at3
A
L
* JEDEC Drawing MS-013 AF
** JEDEC Drawing MO-001 AA-AB
A1
B1
0°–15°
e1
C
eA
B
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: info@impinc.com
http://www.impweb.com
©
2000 IMP, Inc.
Printed in USA
Publication #: 3001
Revision:
Issue Date:
Type:
D
The IMP logo is a registered trademark of IMP, Inc.
08/30/00
Preliminary
All other company and product names are trademarks of their respective owners.
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