Q67100-H8646 Просмотр технического описания (PDF) - Infineon Technologies
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Q67100-H8646 Datasheet PDF : 13 Pages
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PSB 2121
Pin Definitions and Functions
Pin No. Pin No. Symbol Input (I) Definition
P-DSO P-DIP
Output (O)
Function
1
1
VREF
O
Reference
voltage
Output of the 4.0 V reference
voltage.
2
2
IP
I
4
3
IN
I
Positive current
sense
Negative
current sense
When the voltage difference
between these two pins exceeds
100 mV, the digital current limiting
becomes active.
5
4
GND I
Ground
All analog and digital signals are
referred to this pin.
6
5
GA
O
Gate
Totem-pole output driver, has to be
connected with the gate of an
external power switch.
7
6
VEXT
I/O
External supply
Output of the internal CMOS
supply. Via VEXT the internal CMOS-
circuits can be supplied from an
external DC-supply in order to
reduce chip power dissipation.
9
7
CSS
I
Soft start
capacitor
The capacitor at this pin determines
the soft start characteristic.
10
8
11
9
VS
I
PWMP I
Battery voltage
Pulse width
modulator
VS is the positive input voltage.
Non-inverting input of the pulse
width modulator.
12
10
EO
O
Error amplifier output.
14
11
VP
I
Positive
Non-inverting input of the error
voltage sense amplifier.
15
12
VN
I
Negative
Inverting input of the error amplifier.
voltage sense
16
13
UV
I
Undervoltage The undervoltage lockout can be
detection
programmed via UV.
17
14
SYNC I/O
Synchronization This pin can be used as an input for
synchronization of the oscillator to
an external frequency, or as an
output to synchronize multiple
devices.
19
15
OR
I
20
16
OC
I
R-oscillator
C-oscillator
The external timing components of
the ramp generator are attached to
OR and OC.
Semiconductor Group
3
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