UCC3585MTR ,Low Voltage Synchronous Buck Controller UCC3585 Not Recommended for New DesignsSLUS304F − JULY 1999 − REVISED JANUARY 2005
UCC3585MTRG4 ,Low Voltage Synchronous Buck Controllerelectrical characteristics, these specifications hold for T = 0C to 85C for the UCC3585 andAT = − ..
UCC3585MTRG4 ,Low Voltage Synchronous Buck Controller UCC3585 Not Recommended for New DesignsSLUS304F − JULY 1999 − REVISED JANUARY 2005de ..
UCC3588PW ,5-Bit Programmable Output BiCMOS Power Supply Buck Controller
UCC3588PW ,5-Bit Programmable Output BiCMOS Power Supply Buck Controller
UCC3588PW ,5-Bit Programmable Output BiCMOS Power Supply Buck Controller
UPA2702GR-E2 ,Nch enhancement-type MOSFETDATA SHEETMOS FIELD EFFECT TRANSISTOR µµµµ PA2702GRSWITCHINGN-CHANNEL POWER MOS FETDESCRIPTI ..
UPA2702TP ,SWITCHING N-CHANNEL POWER MOSFETFEATURES+0.175.2 –0.2• Low on-state resistanceSRDS(on)1 = 9.5 mΩ MAX. (VGS = 10 V, ID = 7.0 A)RDS(o ..
UPA2702TP-E1 ,Nch enhancement-type MOSFETELECTRICAL CHARACTERISTICS (TA = 25°C, All terminals are connected.)CHARACTERISTICS SYMBOL TEST CON ..
UPA2702TP-E2 ,Nch enhancement-type MOSFETFEATURES• Low on-state resistance6.0 ±0.314RDS(on)1 = 9.5 mΩ MAX. (VGS = 10 V, ID = 7.0 A)4.45.37 M ..
UPA2706 ,Nch enhancement-type MOSFETapplications of notebook computers.4 ; Gate5, 6, 7, 8 ; Drain
UPA2706GR ,Nch enhancement-type MOSFETFEATURES• Low on-state resistanceRDS(on)1 = 15 mΩ MAX. (VGS = 10 V, ID = 5.5 A)6.0 ±0.314RDS(on)2 = ..
UCC3585-UCC3585D-UCC3585DG4-UCC3585M-UCC3585MTR-UCC3585MTRG4
Low Voltage Synchronous Buck Controller
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FEATURES VOUT Resistor Programmable Down to 0.9 V 3.3-V or 5.0-V Input Supply 1% DC Accuracy High Efficiency Synchronous Switching Drives P-Channel (High Side) and N-Channel
(Low Side) MOSFETs Lossless Programmable Current Limit Logic Compatible Shutdown
APPLICATIONS Local Microprocessor Core Voltage Power
Supplies for Desktop and Notebook
Computers DSP Core or I/O Powering High-Speed GTL Bus Regulation
DESCRIPTIONThe UCC3585 synchronous buck controller
provides flexible high efficiency power conversion
for output voltages as low as 0.9 V with ensured
±1% dc accuracy. With an input voltage range of
3.0 V to 5.5 V, it is the ideal choice for 3.3 V only,
5.0 V only, or other low voltage systems. The fixed
frequency oscillator is capable of providing
practical PWM operation to 500 kHz.
The UCC3585 drives a complementary pair of
power MOSFET transistors. A P-channel on the
high side, and an N-channel on the low side step
down the input voltage at up to 90% efficiency.
A programmable two-level current limiting
function is provided by sensing the voltage drop
across the high side P-channel MOSFET. This
circuit can be configured to provide pulse-
by-pulse limiting, timed shutdown after seven
consecutive faults, or latch-off after fault detec-
tion, allowing maximum application flexibility. The
current limit threshold can be programmed over a
wide range with a single resistor. +
ENABLE
VIN
RTN RTN
UDG−01127
VOUT
VIN = 3.3 V
VOUT = 1.8 V
IOUT = 3 A (max)
2 kΩ
2 kΩ
14 kΩ
R3 100 kΩ
C5 0.1 µ F
C4 0.47 µ F
R2 10 kΩ
150 µ F
10 kΩ
0.47 µ F
150 µ F
10 µ F
C2 5600 pF
C3 47 pF
3.7 µ H
C6 470 pF
SI4562DY
UCC3585 Not Recommended for New Designs
