Datasheet LT8418 (Analog Devices) - 3
| Hersteller | Analog Devices |
| Beschreibung | 100V Half-Bridge GaN Driver with Smart Integrated Bootstrap Switch in WLCSP-12 package |
| Seiten / Seite | 19 / 3 — Data Sheet. LT8418. SPECIFICATIONS Table 1. Electrical Characteristics. … |
| Dateiformat / Größe | PDF / 697 Kb |
| Dokumentensprache | Englisch |
Data Sheet. LT8418. SPECIFICATIONS Table 1. Electrical Characteristics. PARAMETER. SYMBOL. CONDITIONS/COMMENTS. MIN. TYP. MAX. UNITS
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Data Sheet LT8418 SPECIFICATIONS Table 1. Electrical Characteristics
(TA = 25°C1, VCC = VBST = 5V, VGND = VSW = 0V; TGP and TGN are connected; BGP and BGN are connected)
PARAMETER SYMBOL CONDITIONS/COMMENTS MIN TYP MAX UNITS Supply Voltage and Current
VCC Operating Voltage V Range CC 3.85 5.5 V VCC Quiescent Current IQ_VCC INT = INB = 0V 250 µA VCC Operating Current IVCC FSW = 400kHz 2.4 mA BST Quiescent Current IQ _BST INT = INB = 0V 80 µA BST Operating Current IBST FSW = 400kHz 1.0 mA
Undervoltage, Overvoltage Protections
VCC UVLO Threshold VUVLO_VCC Falling 3.14 3.35 3.67 V VCC UVLO Hysteresis VUVLO_HYST_VCC 0.2 V VCC OVLO Threshold VOVLO_VCC Rising 5.58 6.0 6.53 V VCC OVLO Hysteresis VOVLO_HYST_VCC 0.2 V BST UVLO Threshold VUVLO_BST Falling 2.9 3.1 3.35 V BST UVLO Hysteresis VUVLO_HYST_BST 0.25 V
Input Pins
INT, INB Input Turn- VON_INT Rising 1.4 1.9 2.4 V On Threshold VON_INB INT, INB Input VHYST_INT 0.4 V Hysteresis VHYST_INB INT, INB Input RINT 200 kΩ Resistance to Ground RINB
Bootstrap Switch
BST Switch Forward Drop at Low Refresh VF_BST IVCC-BST = 100 µA 1 10 mV Current BST Switch Forward Drop at High Refresh VF_BST IVCC-BST = 100 mA 0.6 1 V Current BST Switch Dynamic R On-Resistance BST IVCC-BST = 100 mA 6 Ω
Gate Drivers
TG Driver RON Gate Pull-Up RTG_UP 0.6 Ω V Gate Pull-Down R (BST-SW) = 5V TG_DW 0.2 Ω BG Driver RON Gate Pull-Up RBG_UP 0.6 Ω V Gate Pull-Down R CC = 5V BG_DW 0.2 Ω
analog.com
Rev 0 3 of 19 Document Outline Features Applications General Description Typical Application TABLE OF CONTENTS Revision History Specifications Timing Diagrams Absolute Maximum Ratings Thermal Resistance Pin Configurations and Function Descriptions Pin Descriptions Block diagram Typical Performance Characteristics Theory of Operation 1.1. Chip Start-up, VCC UVLO/OVLO Protections 1.2. Input Interface INT, INB 1.3. Smart Bootstrap (BST) Switch and BST UVLO 1.4. Split Gate Driver Applications Information 1.1. Selecting the VCC and BST Capacitor 1.2. Selecting the Gate Resistance 1.3. Power Dissipation 1.4. PCB Bypass and Grounding Guideline 1.5. Soldering Guideline Outline Dimensions Typical Applications Ordering Guide Related Parts
(TA = 25°C1, VCC = VBST = 5V, VGND = VSW = 0V; TGP and TGN are connected; BGP and BGN are connected)
PARAMETER SYMBOL CONDITIONS/COMMENTS MIN TYP MAX UNITS Supply Voltage and Current
VCC Operating Voltage V Range CC 3.85 5.5 V VCC Quiescent Current IQ_VCC INT = INB = 0V 250 µA VCC Operating Current IVCC FSW = 400kHz 2.4 mA BST Quiescent Current IQ _BST INT = INB = 0V 80 µA BST Operating Current IBST FSW = 400kHz 1.0 mA
Undervoltage, Overvoltage Protections
VCC UVLO Threshold VUVLO_VCC Falling 3.14 3.35 3.67 V VCC UVLO Hysteresis VUVLO_HYST_VCC 0.2 V VCC OVLO Threshold VOVLO_VCC Rising 5.58 6.0 6.53 V VCC OVLO Hysteresis VOVLO_HYST_VCC 0.2 V BST UVLO Threshold VUVLO_BST Falling 2.9 3.1 3.35 V BST UVLO Hysteresis VUVLO_HYST_BST 0.25 V
Input Pins
INT, INB Input Turn- VON_INT Rising 1.4 1.9 2.4 V On Threshold VON_INB INT, INB Input VHYST_INT 0.4 V Hysteresis VHYST_INB INT, INB Input RINT 200 kΩ Resistance to Ground RINB
Bootstrap Switch
BST Switch Forward Drop at Low Refresh VF_BST IVCC-BST = 100 µA 1 10 mV Current BST Switch Forward Drop at High Refresh VF_BST IVCC-BST = 100 mA 0.6 1 V Current BST Switch Dynamic R On-Resistance BST IVCC-BST = 100 mA 6 Ω
Gate Drivers
TG Driver RON Gate Pull-Up RTG_UP 0.6 Ω V Gate Pull-Down R (BST-SW) = 5V TG_DW 0.2 Ω BG Driver RON Gate Pull-Up RBG_UP 0.6 Ω V Gate Pull-Down R CC = 5V BG_DW 0.2 Ω
analog.com
Rev 0 3 of 19 Document Outline Features Applications General Description Typical Application TABLE OF CONTENTS Revision History Specifications Timing Diagrams Absolute Maximum Ratings Thermal Resistance Pin Configurations and Function Descriptions Pin Descriptions Block diagram Typical Performance Characteristics Theory of Operation 1.1. Chip Start-up, VCC UVLO/OVLO Protections 1.2. Input Interface INT, INB 1.3. Smart Bootstrap (BST) Switch and BST UVLO 1.4. Split Gate Driver Applications Information 1.1. Selecting the VCC and BST Capacitor 1.2. Selecting the Gate Resistance 1.3. Power Dissipation 1.4. PCB Bypass and Grounding Guideline 1.5. Soldering Guideline Outline Dimensions Typical Applications Ordering Guide Related Parts