UCC28070-Q1
SLUSA71A –JULY 2010–REVISED JUNE 2011
www.ti.com
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE PART NUMBER
TOP-SIDE MARKING
28070Q
–40°C to 125°C
TSSOP – PW
Reel of 2000
UCC28070QPWRQ1
ABSOLUTE MAXIMUM RATINGS(1) (2) (3) (4)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
LIMIT
22
UNIT
V
Supply voltage: VCC
Supply current: IVCC
20
mA
V
Voltage: GDA, GDB
−0.5 to VCC+0.3
+/− 0.25
Gate drive current – continuous: GDA, GDB
Gate drive current – pulsed: GDA, GDB
A
+/− 0.75
A
Voltage: DMAX, RDM, RT, CDR, VINAC, VSENSE, SS, VAO, IMO, CSA, CSB,
CAOA, CAOB, PKLMT, VREF
−0.5 to +7
V
Current: RT, DMAX, RDM, RSYNTH
Current: VREF, VAO, CAOA, CAOB, IMO
Operating junction temperature, TJ
Storage temperature, TSTG
−0.5
10
mA
mA
°C
−40 to +140
−65 to +150
260
°C
Lead temperature (10 seconds)
(1) These are stress limits. Stress beyond these limits may cause permanent damage to the device. Functional operation of the device at
these or any conditions beyond those indicated under RECOMMENDED OPERATING CONDITIONS is not implied. Exposure to
absolute maximum rated conditions for extended periods of time may affect device reliability.
(2) All voltages are with respect to GND.
(3) All currents are positive into the terminal, negative out of the terminal.
(4) In normal use, terminals GDA and GDB are connected to an external gate driver and are internally limited in output current.
DISSIPATION RATINGS
THERMAL
IMPEDANCE
JUNCTION-TO-
AMBIENT
TA = 25°C POWER
TA = 125°C POWER
PACKAGE
TA = 85°C POWER RATING
RATING
RATING
(2)
(1)
(1)
(1)
20-Pin TSSOP (PW)
125°C/W (1) and
800 mW
320 mW
120 mW
(1) Thermal resistance is a strong function of board construction and layout. Air flow reduces thermal resistance. This number is only a
general guide.
(2) Thermal resistance calculated with a low-K methodology.
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
PARAMETER
VCC Input Voltage (from a low-impedance source)
VREF Load Current
MIN
MAX
UNIT
V
VUVLO + 1 V
21
2
mA
VINAC Input Voltage Range
0
0
3
IMO Voltage Range
3.3
3.6
750
330
V
PKLMT, CSA, CSB Voltage Range
0
RSYNTH Resistance (RSYN
RDM Resistance (RRDM
)
15
30
kΩ
)
2
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