SLUS473A – NOVEMBER 1999 – REVISED MARCH 2001
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absolute maximum ratings over operating free-air temperature (unless otherwise noted)†
Supply voltage 15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage (VFF,RC,ILIM) 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage (FB) 15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input current (DISCH) 1 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current (OUT) dc ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature, Tstg –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Junction temperature, TJ–55°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature (soldering, 10 sec.) 300°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
‡All voltages are with respect to GND. Currents are positive into, negative out of the specified terminal. Consult Packaging Section of the Power
Supply Control Data Book (TI Literature Number SLUD003) for thermal limitations and considerations of packages.
AVAILABLE OPTIONS
Packaged Devices
TA = TJUVLO Option SOIC-8
Small Outline (D)†PDIP-8
Plastic Dip (P)
MSOP-8
Small Outline
(DGK)†
°
°
8.8V/8V UCC25705D UCC25705P UCC25705DGK
–
°
to
5°
12V/8V UCC25706D UCC25706P UCC25706DGK
°
°
8.8V/8V UCC35705D UCC35705P UCC35705DGK
°
to 7
°
12V/8V UCC35706D UCC35706P UCC35706DGK
†D (SOIC–8) and DGK (MSOP–8) packages are available taped and reeled. Add R suffix to device type (e.g.
UCC35705DR) to order quantities of 2500 devices per reel for SOIC-8 and 2000 devices per reel for the MSOP-8.
electrical characteristics, VDD = 1 1 V, VIN = 30 V, RT = 47 k, RDISCH = 400 k, RFF = 14 k, CT = 220 pF,
CVDD = 0.1 µF, and no load on the outputs, 0°C ≤ T A ≤ 70°C for the UCC3570x and –40°C ≤ T A ≤ 85°C
for the UCC2570x, TA = TJ, (unless otherwise specified)
UVLO section (UCCx5705)
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Start threshold 8.0 8.8 9.6 V
Stop threshold 7.4 8.2 9.0 V
Hysteresis 0.3 0.6 1.0 V
UVLO section (UCCx5706)
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Start threshold 11.2 12.0 12.8 V
Stop threshold 7.2 8.0 8.8 V
Hysteresis 3.5 4.0 4.5 V
supply current section
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Start-up current VDD = UVLO start – 1 V, VDD comparator off 30 90 µA
IDD active VDD comparator on, oscillator running at 1 MHz 4.2 5.0 mA