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UC2856Q1TIN/a3avaiAutomotive Catalog Improved Current Mode PWM Controller
UC2856QDWRQ1TIN/a11avaiAutomotive Catalog Improved Current Mode PWM Controller 16-SOIC -40 to 125


UC2856QDWRQ1 ,Automotive Catalog Improved Current Mode PWM Controller 16-SOIC -40 to 125FEATURES• Qualified for Automotive ApplicationsDW PACKAGE• Pin-for-Pin Compatible With the UC2846(T ..
UC285T-1 ,1                   ..
UC285T-3 ,1                   ..
UC285T-ADJ ,1maximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
UC285TD-ADJ ,1electrical characteristics unless otherwise stated, these parameters apply for T = −40°C to 100°CAf ..
UC285TDKTTT-1 ,1maximum ratings over operating free-air temperature (unless otherwise noted)VB . . . . . . . . . . ..
UM82450L , Asynchronous Communication Element(ACE)
UM91214B , Tone / Pulse Dialer
UM91214B , Tone / Pulse Dialer
UM91215D , Tone / Pulse Dialer
UM91260B , 10 MEMORY TONE /PULSE DIALER
UM91270/A , 20 MEMORY TONE/PULSE DIALER


UC2856Q1-UC2856QDWRQ1
Automotive Catalog Improved Current Mode PWM Controller
EA+
EA−
COMP
GND
AOUT
SYNC
DW PACKAGE

P0008-01
1FEATURES
Qualified for Automotive Applications Pin-for-Pin Compatible With the UC2846 65-ns Typical Delay From Shutdownto
Outputs and 50-ns Typical Delay From Syncto
Outputs
Improved Current Sense Amplifier With
Reduced Noise Sensitivity
Differential Current Sense With 3-V
Common-Mode Range
Trimmed Oscillator Discharge Current for
Accurate Deadband Control
Accurate 1-V Shutdown Threshold High Current Dual Totem Pole Outputs
(1.5-A Peak)
TTL Compatible Oscillator SYNC Pin
Thresholds
ESD Protection 4-kV Human-Body Model (HBM) 500-V Charged-Device Model (CDM)
DESCRIPTION

The UC2856isa high performance versionof the popular UC2846 andis
intended for both design upgrades and new applications where inputto
output delays have been minimized, and the current sense output
Fast 1.5-A peak output stages have been addedto allow rapid low impedance TTL compatible sync output has been implementedasa
sync input.
Internal chip grounding has been improvedto minimize internal noise caused when driving large capacitive
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