JAJSBT2D October 2012 – March 2017 TPS54340
PRODUCTION DATA.
VALUE | UNIT | ||
---|---|---|---|
VESD (1) | Human Body Model (HBM) ESD Stress Voltage (2) | ±2000 | V |
Charged Device Model (HBM) ESD Stress Voltage (3) | ±500 |
MIN | MAX | UNIT | ||
---|---|---|---|---|
VIN | Supply input voltage (1) | VO + VDO | 42 | V |
VO | Output voltage | 0.8 | 41.1 | V |
IO | Output current | 0 | 3.5 | A |
TJ | Junction Temperature | –40 | 150 | °C |
THERMAL METRIC(1)(2) | TPS54340 | UNIT | |
---|---|---|---|
DDA (8 PINS) | |||
θJA | Junction-to-ambient thermal resistance (standard board) | 42.0 | °C/W |
ψJT | Junction-to-top characterization parameter | 5.9 | °C/W |
ψJB | Junction-to-board characterization parameter | 23.4 | °C/W |
θJCtop | Junction-to-case(top) thermal resistance | 45.8 | °C/W |
θJCbot | Junction-to-case(bottom) thermal resistance | 3.6 | °C/W |
θJB | Junction-to-board thermal resistance | 23.4 | °C/W |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | ||
---|---|---|---|---|---|---|---|
SUPPLY VOLTAGE (VIN TERMINAL) | |||||||
Operating input voltage | 4.5 | 42 | V | ||||
Internal undervoltage lockout threshold | Rising | 4.1 | 4.3 | 4.48 | V | ||
Internal undervoltage lockout threshold hysteresis | 325 | mV | |||||
Shutdown supply current | EN = 0 V, 25°C, 4.5 V ≤ VIN ≤ 42 V | 1.3 | 3.5 | μA | |||
Operating: nonswitching supply current | FB = 0.9 V, TA = 25°C | 146 | 175 | ||||
ENABLE AND UVLO (EN TERMINAL) | |||||||
Enable threshold voltage | No voltage hysteresis, rising and falling | 1.1 | 1.2 | 1.3 | V | ||
Input current | Enable threshold +50 mV | –4.6 | μA | ||||
Enable threshold –50 mV | –0.58 | –1.2 | -1.8 | ||||
Hysteresis current | –2.2 | –3.4 | -4.5 | μA | |||
VOLTAGE REFERENCE | |||||||
Voltage reference | 0.792 | 0.8 | 0.808 | V | |||
HIGH-SIDE MOSFET | |||||||
On-resistance | VIN = 12 V, BOOT-SW = 6 V | 92 | 190 | mΩ | |||
ERROR AMPLIFIER | |||||||
Input current | 50 | nA | |||||
Error amplifier transconductance (gM) | –2 μA < ICOMP < 2 μA, VCOMP = 1 V | 350 | μS | ||||
Error amplifier transconductance (gM) during soft-start | –2 μA < ICOMP < 2 μA, VCOMP = 1 V, VFB = 0.4 V | 77 | μS | ||||
Error amplifier dc gain | VFB = 0.8 V | 10,000 | V/V | ||||
Min unity gain bandwidth | 2500 | kHz | |||||
Error amplifier source/sink | V(COMP) = 1 V, 100 mV overdrive | ±30 | μA | ||||
COMP to SW current transconductance | 12 | A/V | |||||
CURRENT LIMIT | |||||||
Current limit threshold | All VIN and temperatures, Open Loop(1) | 4.5 | 5.5 | 6.8 | A | ||
All temperatures, VIN = 12 V, Open Loop(1) | 4.5 | 5.5 | 6.25 | ||||
VIN = 12 V, TA = 25°C, Open Loop(1) | 5.2 | 5.5 | 5.85 | ||||
THERMAL SHUTDOWN | |||||||
Thermal shutdown | 176 | °C | |||||
Thermal shutdown hysteresis | 12 | °C | |||||
TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK TERMINAL) | |||||||
Switching frequency range using RT mode | 100 | 2500 | kHz | ||||
fSW | Switching frequency | RT = 200 kΩ | 450 | 500 | 550 | kHz | |
Switching frequency range using CLK mode | 160 | 2300 | kHz | ||||
RT/CLK high threshold | 1.55 | 2 | V | ||||
RT/CLK low threshold | 0.5 | 1.2 | V |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | ||
---|---|---|---|---|---|---|---|
ENABLE AND UVLO (EN TERMINAL) | |||||||
Enable to COMP active | VIN = 12 V , TA = 25°C | 540 | µs | ||||
INTERNAL SOFT-START TIME | |||||||
Soft-Start Time | fSW = 500 kHz, 10% to 90% | 2.1 | ms | ||||
Soft-Start Time | fSW = 2.5 MHz, 10% to 90% | 0.42 | ms | ||||
HIGH-SIDE MOSFET | |||||||
Minimum controllable on time | VIN = 12 V, TA = 25°C | 135 | ns | ||||
CURRENT LIMIT | |||||||
Current limit threshold delay | 60 | ns | |||||
TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK TERMINAL) | |||||||
Minimum CLK input pulse width | 15 | ns | |||||
RT/CLK falling edge to SW rising edge delay | Measured at 500 kHz with RT resistor in series | 55 | ns | ||||
PLL lock in time | Measured at 500 kHz | 78 | μs |
VIN = 12 V |
VIN = 12 V |
VIN = 12V |
VIN = 12 V | RT = 200 kΩ | |
VIN = 12 V |
VIN = 12 V |
VIN = 12 V |
VIN = 12 V |
VIN = 12 V | TJ = 25°C |
ƒsw (kHz) = 92417 x RT (kΩ) -0.991 | ||
RT (kΩ) = 101756 x ƒsw (kHz) -1.008 |
VIN = 12 V |
VIN = 12 V |
VIN = 12V |
TJ = 25°C |
TJ = 25°C |