30
(I): Input,
(IPU): input with p-channel pull-up transistor,
(ODN): output with open drain n-channel transistor
(OD3): output 3-state
4.16. MC34167
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, under voltage lockout, and thermal shutdown. Also included is a
low power standby mode that reduces power supply current to 36 mA.
• 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
• Under voltage Lockout with Hysteresis
• Internal Thermal Shutdown
• Operation from 7.5 V to 40 V
• Standby Mode Reduces Power Supply Current to 36 mA
• Economical 5–Lead TO–220 Package with Two Optional Leadforms
• Also Available in Surface Mount D
2
PAK Package
• Moisture Sensitivity Level (MSL) Equals 1
4.17. TFMS5360
The TFMS5360 is a miniature receiver for infrared remote control systems.
• Photo detector and preamplifier in one.
• 36 KHZ
• Pin diode and preamp
• IR filter.
4.18. Board Connectors, Headers & Jumpers
4.18.1.
Analog PC Connector (PL400)
Pin #
Logic
I/O
Signal Description
Impedance
1
Analog
I
Red Component
75
2
Analog
I
Green Comp.
75
3
Analog
I
Blue Comp.
75
13
TTL
I
Horizontal Sync
14
TTL
I
Vertical Sync
12
TTL
I/O
I2C Data
15
TTL
I
I2C Clock
9
Power
I
+5V
5,6,7,8,10
Ground
4,11
No Connect
Summary of Contents for 17MB18
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