Datasheet LTC3562 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | I2C Quad Synchronous Step-Down DC/DC Regulator 2 x 600mA, 2 x 400mA |
| Pages / Page | 20 / 3 — ELECTRICAL CHARACTERISTICS. The. denotes the specifi cations which apply … |
| File Format / Size | PDF / 258 Kb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS. The. denotes the specifi cations which apply over the full operating
Model Line for this Datasheet
Text Version of Document
LTC3562
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C, VIN = 3.8V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS I2C Port
DVCC Operating Voltage l 1.5 5.5 V DVCC Operating Current DVCC = 1.8V, Serial Port Idle 1 μA DVCC UVLO Threshold Voltage 1 V VIL SDA, SCL (Low Level Input Voltage) 0.3 • DVCC V VIH SDA, SCL (High Level Input Voltage) 0.7 • DVCC V VOL SDA (Digital Output Low) IPULLUP = 3mA 0.08 V
Serial Port Timing (Note 4)
tSCL Clock Operating Frequency 400 kHz tBUF Bus Free Time Between Stop and Start Conditions 1.3 μs tHD,STA Hold Time After (Repeated) Start Condition 0.6 μs tSU,STA Repeated Start Condition Setup Time 0.6 μs tSU,STO Stop Condition Setup Time 0.6 μs tHD,DAT(OUT) Data Hold Time 225 ns tHD,DAT(IN) Input Data Hold Time 0 900 ns tSU,DAT Data Setup Time 100 ns tLOW Clock Low Period 1.3 μs tHIGH Clock High Period 0.6 μs tf Clock Data Fall Time 20 300 ns tr Clock Data Rise Time 20 300 ns tSP Spike Suppression Time 50 ns
BUCK DC/DC ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C, VIN = 3.8V, VOUTx = 1.5V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Regulators R600A, R400A, R600B, R400B
fOSC 1.91 2.25 2.59 MHz Maximum Duty Cycle Pulse Skip Mode 100 % LDO Mode Closed Loop ROUT LDO Mode 0.25 Ω
Regulators R600A, R600B
PMOS Switch Current Limit Pulse Skip Mode 850 1200 1500 mA PMOS RDS(ON) 0.38 Ω NMOS RDS(ON) 0.38 Ω LDO Mode Open Loop ROUT LDO Mode 2.2 Ω Available Output Current Forced Burst Mode 75 140 mA LDO, VOUT = 1.2V 50 mA SW Pull-Down in Shutdown Shutdown 2.5 kΩ 3562fa 3
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C, VIN = 3.8V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS I2C Port
DVCC Operating Voltage l 1.5 5.5 V DVCC Operating Current DVCC = 1.8V, Serial Port Idle 1 μA DVCC UVLO Threshold Voltage 1 V VIL SDA, SCL (Low Level Input Voltage) 0.3 • DVCC V VIH SDA, SCL (High Level Input Voltage) 0.7 • DVCC V VOL SDA (Digital Output Low) IPULLUP = 3mA 0.08 V
Serial Port Timing (Note 4)
tSCL Clock Operating Frequency 400 kHz tBUF Bus Free Time Between Stop and Start Conditions 1.3 μs tHD,STA Hold Time After (Repeated) Start Condition 0.6 μs tSU,STA Repeated Start Condition Setup Time 0.6 μs tSU,STO Stop Condition Setup Time 0.6 μs tHD,DAT(OUT) Data Hold Time 225 ns tHD,DAT(IN) Input Data Hold Time 0 900 ns tSU,DAT Data Setup Time 100 ns tLOW Clock Low Period 1.3 μs tHIGH Clock High Period 0.6 μs tf Clock Data Fall Time 20 300 ns tr Clock Data Rise Time 20 300 ns tSP Spike Suppression Time 50 ns
BUCK DC/DC ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C, VIN = 3.8V, VOUTx = 1.5V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Regulators R600A, R400A, R600B, R400B
fOSC 1.91 2.25 2.59 MHz Maximum Duty Cycle Pulse Skip Mode 100 % LDO Mode Closed Loop ROUT LDO Mode 0.25 Ω
Regulators R600A, R600B
PMOS Switch Current Limit Pulse Skip Mode 850 1200 1500 mA PMOS RDS(ON) 0.38 Ω NMOS RDS(ON) 0.38 Ω LDO Mode Open Loop ROUT LDO Mode 2.2 Ω Available Output Current Forced Burst Mode 75 140 mA LDO, VOUT = 1.2V 50 mA SW Pull-Down in Shutdown Shutdown 2.5 kΩ 3562fa 3
