3 Electrical Characteristics
3.1 Absolute Maximum Ratings
| PVIN, VIN, EN to PGND, CB to SW1 | -0.3V to 18V |
| VCC to PGND | -0.3V to 6V |
| SW1, SW2 | -0.3V to 15V |
| FB, SYNC, ADDR, SCL, SDA, SALERT, to AGND | -0.3V to VCC |
| PG to AGND | -0.3V to VCC |
| PGND to AGND | -0.3V to 0.3V |
| ESD HBM JESD22-A114 | Class 1C |
| Maximum Junction Temperature (TJ) | -40°C to 150°C |
| Storage Temperature (TS) | -55°C to 150°C |
| Moisture Sensitivity Rating (JEDEC, J-STD-020D) | MSL 3 |
Note: Stresses above those listed under “Maximum Ratings”
may cause permanent damage to the device. This is a stress rating only and functional
operation of the device at those or any other conditions above those indicated in the
operational sections of this specification is not intended. Exposure to maximum rating
conditions for extended periods may affect device reliability.
3.2 Recommended Operating Ratings(1)
| Input Voltage Range with External VCC(2)(4), PVIN | 6*VOUT to 16V |
| Input Voltage Range with Internal LDO(3)(4) , PVIN | 6*VOUT to 16V |
| Bias Input voltage Range(3), VIN | 4.5V to 16V |
| Supply Voltage Range(5), VCC | 4.5V to 5.5V |
| Output Voltage Range, VOUT | 0.6V to 1.8V |
| Continuous Output Current Range, IO | 0A to 12A |
| Operating Junction Temperature Range, TJ | -40°C to 125°C |
Note:
- The device is not guaranteed to operate outside its operating ratings.
- VIN is connected to VCC to bypass the internal Low Drop-Out (LDO) regulator.
- VIN is connected to PVIN (for single-rail applications with PVIN = VIN = 4.5V – 16V).
- Maximum switch node voltage should not exceed 15V.
- Must not exceed 6V.
3.3 DC/AC Characteristics
| Electrical Characteristics: 6*VOUT < PVIN <16V, 4.5V < VIN < 16V, 0°C < TA < 125°C unless specified otherwise, Typicals at TA = 25°C | ||||||
|---|---|---|---|---|---|---|
| Parameter | Symbol | Min. | Typ. | Max. | Units | Conditions |
| Input Current | ||||||
| VIN Supply Current (Standby) | IIN(STANDBY) | 7 | 8 | mA | Enable low | |
| VIN Supply Current (Dynamic) | IIN(DYN) | 16 | 18 | mA | Enable High, FSW = 470 kHz | |
| Soft Start | ||||||
| Soft Start Rate(1) | SSRATE | 0.17 | 0.28 | 0.37 | V/ms | Default VOUT = 0.6V, TON_RISE = 2 ms |
| Output Voltage | ||||||
| Output voltage Range | VOUT (default) | 0.6 | V | |||
| Range | 0.6 | 1.8 | V | |||
| Resolution | 5 | mV | ||||
| Accuracy | +/-0.75 | % | TJ = 25°C, VOUT = 0.6V | |||
| -1 | +1 | % | -40°C < TJ < 125°C(2) | |||
| On-Time Timer Control | ||||||
| On Time | TON | 185 | 211 | 235 | ns | PVIN = 12V, VOUT = 0.6V, FSW = 470 kHz |
| Minimum On Time(1) | TON(MIN) | 50 | ns | |||
| Internal Low Drop Out Regulator (LDO | ||||||
| Regulator Output Voltage | VCC | 4.89 | 5.2 | 5.4 | V | 5.5 < VIN < 16V, 0-40 mA |
| 4.19 | 4.26 | V | 4.5 < VIN < 5.5V, 0-40 mA | |||
| Load Regulation | VLD | 0.19 | V | 0-40 mA | ||
| Thermal Shutdown | ||||||
| Thermal Shutdown(1) | 145 | C | ||||
| Hysteresis(1) | 25 | C | ||||
| Undervoltage Lock Out | ||||||
| VCC Start Threshold | VCC_UVLO(START) | 4.0 | 4.2 | 4.4 | V | VCC rising |
| VCC Stop Threshold | VCC_UVLO(STOP) | 3.6 | 3.8 | 4.1 | V | VCC falling |
| Enable Threshold | En(HIGH) | 1.05 | 1.20 | 1.34 | V | EN rising |
| En(LOW) | 0.92 | 1.00 | 1.11 | V | EN falling | |
| Input Impedance | REN | 500 | 1000 | 1500 | kΩ | |
| Current Limit | ||||||
| Current Limit Threshold | IOC (default) | 14.5 | 16 | 17.5 | A | TJ = 25°C |
| IOC (range) | 10 | 16 | A | |||
| Hiccup Blanking Time | TBLK(HICCUP) | 20 | ms | |||
| Over Voltage Protection (OVP) | ||||||
| OVP Threshold(1) | VOVP (default) | 115 | 120 | 125 | % | |
| VOVP (range) | 105 | 120 | % | |||
| VOVP (resolution) | 5 | % | ||||
| OVP Delay | TOVPDEL | 5 | μs | |||
| Power Good | ||||||
| Upper Threshold | VPG(UPPER) (default) | 85 | 90 | 95 | % | VOUT rising |
| Hysteresis | VPG(LOWER) | 7 | % | VOUT falling | ||
| Sink Current | IPG | 9 | mA | VPG = 0.5V, EN = 2V | ||
| Telemetry | ||||||
| Input Voltage Reporting Accuracy | PVIN_report_err | -2 | +2 | % | PVIN = 12V, -40°C < TJ < 125°C | |
| -5 | +5 | % | 5V < PVIN < 16V, -40°C < TJ < 125°C | |||
| Output Voltage Reporting Accuracy | VOUT_report_err | -18 | +18 | mV | VOUT = VFB = 0.6V, -40°C < TJ < 125°C | |
| Temperature Reporting Accuracy(1) | T_report_err | -20 | +20 | °C | -40°C < TJ < 125°C | |
Note:
| ||||||
| Electrical Characteristics: 6*VOUT < PVIN <16V, 4.5V < VIN < 16V, 0°C < TA < 125°C unless specified otherwise, Typicals at TA = 25°C | |||||||
|---|---|---|---|---|---|---|---|
| Parameter(1 – all parameters) | Symbol | Fast-mode | Fast-mode Plus | Unit | Conditions | ||
| Min. | Max. | Min. | Max. | ||||
| I2C Parameters | |||||||
| I2C Bus Voltage | VBUS | 1.8 | 5.5 | 1.8 | 5.5 | V | |
| Vin Low | VIL | -0.5 | 0.3*VBUS | -0.5 | 0.3*VBUS | V | |
| Vin High | VIH | 0.7*VBUS | 0.7*VBUS | V | |||
| Input Hysteresis | VHYS | 0.05*VBUS | 0.05*VBUS | V | |||
| Low Level Output Voltage 1 | 0 | 0.4 | 0 | 0.4 | V | 3 mA sink current, VCC > 2V | |
| Low Level Output Voltage 2 | VOL2 | 0 | 0.2* VBUS | 0 | 0.2* VBUS | 2 mA sink current, VCC < 2V | |
| Low level sink Current | IOL | 3 | 3 | mA | VOL = 0.4V | ||
| 6 | 6 | mA | VOL = 0.6V | ||||
| Output Fall Time | TOF | 20*(VBUS/5.5) | 250 | 20*(VBUS/5.5) | 125 | ns | |
| Max Noise Spike Width | TSP | 0 | 50 | 0 | 50 | ns | |
| Input Current | IIN | -10 | 10 | -10 | 10 | uA | |
| Input Capacitance | CI | - | 10 | - | 10 | pF | |
| SCL Frequency | FSCL | 0 | 400 | 0 | 1000 | kHz | |
| Repeated Start Hold Time | THD;STA | 0.6 | - | 0.26 | - | μs | |
| SCL Low Time | TLOW | 1.3 | - | 0.5 | - | μs | |
| SCL High Time | THIGH | 0.6 | - | 0.26 | - | μs | |
| Repeated Start Setup Time | TSU;STA | 0.6 | - | 0.26 | - | μs | |
| Data Hold Time | THD;DAT | 0 | - | 0 | - | μs | |
| Data Setup Time | TSU;DAT | 100 | - | 50 | - | ns | |
| SDA, SCL Rise Time | TR | 20 | 300 | - | 120 | ns | |
| SDA, SCL Fall Time | TF | 20*(VDD/5) | 300 | 20*(VBUS/5) | 120 | ns | |
| STOP setup Time | TSU;STO | 0.6 | - | 0.26 | - | μs | |
| Bus Free Time between STOP and START | TBUF | 1.3 | - | 0.5 | - | μs | |
| Bus Capacitive Load | CBUS | - | 400 | - | 550 | pF | |
| Data Valid Time | TVD;DAT | - | 0.9 | - | 0.45 | μs | |
| Data Valid ACK Time | TVD;ACK | - | 0.9 | - | 0.45 | μs | |
| Noise Margin at LOW Level | VNL | 0.1*VDD | - | 0.1*VDD | - | V | |
| Noise Margin at HIGH Level | VNH | 0.2*VDD | - | 0.2*VDD | - | V | |
| SDA Timeout | TTO | 200 | 200 | μs | |||
Note:
| |||||||
| Parameter | Symbol | Min. | Typ. | Max. | Units | Conditions |
|---|---|---|---|---|---|---|
| Junction to Ambient Thermal Resistance | RθJA | — | 20.5 | — | °C/W | JEDEC JESD 51-2A |
| Junction to PCB Thermal Resistance | RθJ-PCB | — | 5.5 | — | °C/W | JEDEC JESD 51-8 |