Datasheet LTC3721-1 (Analog Devices) - 2

HerstellerAnalog Devices
BeschreibungPush-Pull PWM Controller
Seiten / Seite16 / 2 — ABSOLUTE AXI U. RATI GS (Note 1). PACKAGE/ORDER I FOR ATIO. ELECTRICAL …
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ABSOLUTE AXI U. RATI GS (Note 1). PACKAGE/ORDER I FOR ATIO. ELECTRICAL CHARACTERISTICS The

ABSOLUTE AXI U RATI GS (Note 1) PACKAGE/ORDER I FOR ATIO ELECTRICAL CHARACTERISTICS The

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LTC3721-1
W W W U ABSOLUTE AXI U RATI GS (Note 1)
VCC to GND (Low Impedance Source) ...– 0.3V to 10V VREF Output Current ... Self-Regulated (Chip Self-Regulates at 10.3V) Operating Temperature (Notes 5,6) UVLO to GND ... – 0.3V to VCC LTC3721-1 ... – 40°C to 85°C All Other Pins to GND Storage Temperature Range ... – 65°C to 125°C (Low Impedance Source) ...– 0.3V to 5.5V Lead Temperature (GN Package only) VCC (Current Fed) ... 40mA (Soldering, 10sec) .. 300°C
U W U PACKAGE/ORDER I FOR ATIO
TOP VIEW ORDER PART TOP VIEW ORDER PART V 1 16 REF NC NUMBER NUMBER REF NC V UVLO SS NC 2 15 UVLO LTC3721EGN-1 16 15 14 13 LTC3721EUF-1 NC 3 14 SS DRVB 1 12 FB DRVB 4 13 FB V 2 11 CC RLEB 17 V 5 12 CC RLEB DRVA 3 10 COMP DRVA 6 11 COMP PGND CS GN PART 4 9 UF PART GND 7 10 CS 5 6 7 8 MARKING T MARKING C 8 9 T DPRG C NC SGND DPRG GN PACKAGE 37211 UF PACKAGE 37211 16-LEAD PLASTIC SSOP 16-LEAD (4mm × 4mm) PLASTIC QFN TJMAX = 125°C, θJA = 100°C/W TJMAX = 125°C, θJA = 100°C/W EXPOSED PAD IS GND (PIN17) MUST BE SOLDERED TO PCB Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VCC = 9.5V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Input Supply
VCCUV VCC Undervoltage Lockout Measured on VCC 10.25 10.7 V VCCHY VCC UVLO Hysteresis Measured on VCC 3.8 4.2 V ICCST Start-Up Current VCC = VUVLO – 0.3V ● 145 230 µA ICCRN Operating Current No Load on Outputs 3 6 mA VSHUNT Shunt Regulator Voltage Current into VCC = 10mA 10.3 10.8 V RSHUNT Shunt Resistance Current into VCC = 10mA to 17mA 1.4 3.5 Ω SUVLO System UVLO Threshold Measured on UVLO Pin, 10mA into VCC 4.8 5.0 5.2 V SHYST System UVLO Hysteresis Current Current Flows Out of UVLO Pin, 10mA into VCC 8.5 10 11.5 µA sn37211 37211fs 2