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ZXRD1050PQ16 Datasheet(PDF) 6 Page - Diodes Incorporated

Part # ZXRD1050PQ16
Description  HIGH EFFICIENCY SIMPLESYNC??PWM DC-DC CONTROLLERS
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

ZXRD1050PQ16 Datasheet(HTML) 6 Page - Diodes Incorporated

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Functional Block Diagram
PIN DESCRIPTIONS
‡ See relevant Applications Section
Pin No.
Name
Description
1
Bootstrap
Bootstrap circuit for generating gate drive
2VDRIVE
Output to the gate drive circuit for main N/P channel switches
3PWRGND
Power ground
4GND
Signal ground
5CT
Timing Capacitor sets oscillator frequency. ‡
6VINT
Internal Bias Circuit. Decouple with 1
µF ceramic capacitor
7RSENSE+
Higher potential input to the current sense for current limit circuit
8RSENSE-
Lower potential input to the current sense for current limit circuit
9
SHDN
Shutdown control. Active low.
10
Decoup
Optional short circuit and overload decoupling capacitor for increased accuracy
11
LBF
Low battery flag output. Active low, open collector output
12
LBSET
Low battery flag set. Can be connected to VIN if unused, or threshold set
via potential divider. ‡
13
VIN
Input Voltage
14
Delay
External R and C to set the desired cycle time for hiccup circuit. ‡
15
Comp
Compensation pin to allow for stability components and soft start. ‡
16
VFB
Feedback Voltage. This pin has a different function between fixed and
adjustable controller options. The appropriate controller must be used for
the fixed or adjustable solution. Connect to VOUT for fixed output, or to
potential divider for adjustable output. ‡
6
ISSUE 4 - OCTOBER 2000
ZXRD1000 SERIES


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