LTC3562 Datasheet, PDF (3/20 Pages) Linear Technology – I2C Quad Synchronous Step-Down DC/DC Regulator 2 × 600mA, 2 × 400mA

LTC3562
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C, V_IN = 3.8V, unless otherwise noted.
PARAMETER
I²C Port
DV_CC Operating Voltage
DV_CC Operating Current
DV_CC UVLO Threshold Voltage
V_IL SDA, SCL (Low Level Input Voltage)
V_IH SDA, SCL (High Level Input Voltage)
V_OL SDA (Digital Output Low)
Serial Port Timing (Note 4)
t_SCL
t_BUF
t_HD,STA
t_SU,STA
t_SU,STO
t_HD,DAT(OUT)
t_HD,DAT(IN)
t_SU,DAT
t_LOW
t_HIGH
t_f
t_r
t_SP
CONDITIONS
MIN TYP MAX UNITS
DV_CC = 1.8V, Serial Port Idle
I_PULLUP = 3mA
l 1.5
5.5
V
1
μA
1
V
0.3 • DV_CC
V
0.7 • DV_CC
V
0.08
V
Clock Operating Frequency
Bus Free Time Between Stop and Start Conditions
1.3
Hold Time After (Repeated) Start Condition
0.6
Repeated Start Condition Setup Time
0.6
Stop Condition Setup Time
0.6
Data Hold Time
225
Input Data Hold Time
0
Data Setup Time
100
Clock Low Period
1.3
Clock High Period
0.6
Clock Data Fall Time
20
Clock Data Rise Time
20
Spike Suppression Time
50
400
kHz
μs
μs
μs
μs
ns
900
ns
ns
μs
μs
300
ns
300
ns
ns
BUCK DC/DC ELECTRICAL CHARACTERISTICS ^{The l denotes the specifications which apply over the}
full operating temperature range, otherwise specifications are at T_A = 25°C, V_IN = 3.8V, V_OUTx = 1.5V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Regulators R600A, R400A, R600B, R400B
f_OSC
Maximum Duty Cycle
Pulse Skip Mode
1.91 2.25 2.59
MHz
100
%
LDO Mode Closed Loop R_OUT
Regulators R600A, R600B
LDO Mode
0.25
Ω
PMOS Switch Current Limit
Pulse Skip Mode
850 1200 1500
mA
PMOS R_DS(ON)
NMOS R_DS(ON)
LDO Mode Open Loop R_OUT
Available Output Current
SW Pull-Down in Shutdown
LDO Mode
Forced Burst Mode
LDO, V_OUT = 1.2V
Shutdown
0.38
Ω
0.38
Ω
2.2
Ω
75
140
mA
50
mA
2.5
kΩ
3562fa
3