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ACT8870 bảng dữ liệu(PDF) 11 Page - Active-Semi, Inc

tên linh kiện ACT8870
Giải thích chi tiết về linh kiện  Advanced PMU for Microcontrollers and Solid State Drive Applications
PDF  38 Pages
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nhà sản xuất  ACTIVE-SEMI [Active-Semi, Inc]
Trang chủ  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT8870 bảng dữ liệu(HTML) 11 Page - Active-Semi, Inc

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ACT8870QJ-T
REV 0 23-DEC-2016
Innovative PowerTM
ActiveSwitcherTM is a trademark of Active-Semi.
11
INTERNAL STEP-DOWN DC/DC ELECTRICAL CHARACTERISTICS REGULATOR: (BUCK1)
(VIN_B1 = 5V, TA = 25°C, unless otherwise specified.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
Input Operating Voltage Range
2.8
5.5
V
Output Voltage Range
Configurable in 12.5mV steps
0.8
4.0
V
Standby Supply Current, Low Power Mode Ena-
bled
VOUT_B1 = 103%, Regulator Enabled, No
Load
45
µA
Shutdown Current
Regulator Disabled
1
µA
Output Voltage Accuracy – Default Voltage -
PWM Mode
VOUT_B1 = 3.3V, IOUT = 2A
-1%
VNOM
1%
V
Output Voltage Accuracy – Default Voltage -
PFM Mode
VOUT_B1 = 3.3V, IOUT = 1mA
-1%
VNOM
1%
V
Line Regulation
VOUT_B1 = 2.8V VIN_B1 = 3.3V to 5.5V,
PWM Regulation
0.02
%/V
Load Regulation
VOUT_B1 = 3.3V PWM Regulation
0.04
%/A
Power Good Threshold
VOUT_B1 Rising
92
93
94
%VNOM
Power Good Hysteresis
VOUT_B1 Falling
3
%VNOM
Overvoltage Fault Threshold
VOUT_B1 Rising
107.5
110
112.5
%VNOM
Overvoltage Fault Hysteresis
VOUT_B1 Falling
3
%VNOM
Switching Frequency
VOUT_B1 ≥ 20% of VNOM
1.075
1.125
1.180
MHz
Soft-Start Period Tset
Configurable
10% to 90% VNOM
300
500
2000
µs
High Side FET Peak Current Limit (Cycle-by-Cy-
cle) ILIMSET
B1_ILIMSET=11
B1_ILIMSET=10
B1_ILIMSET=01
B1_ILIMSET=00
3.0
3.8
4.6
5.3
A
High Side FET Peak Current Limit (Cycle-by-
Cycle)e Tolerance
At default ILIMSET
-10
ILIMSET
+10
%
At other set points
-15
ILIMSET
+15
%
High Side FET Peak Current Limit, IRQ Trigger
Level
Below ILIMSET = 00, 01, 10
-30.0
-22.5
-15.0
%
Below ILIMSET = 11
-32.5
-22.5
-12.5
%
High Side FET Peak Current Limit, Shutdown
Level
Above ILIMSET = 00, 01, 10
+15.0
+22.5
+30
%
Above ILIMSET = 11
+12.5
+22.5
+32.5
%
PMOS On-Resistance
ISW = -1A, VIN = 5.0V
0.025
0.04
Ω
NMOS On-Resistance
ISW = 1A, VIN = 5.0V
0.025
Ω
SW Leakage Current
VIN_B1 = 5.5V, VSW = 0 or 5.5V
1
µA
Dynamic Voltage Scaling Rate
B1_SLEW=00 (not allowed)
B1_SLEW=01
B1_SLEW=10
B1_SLEW=11
N/A
14.0
3.50
0.88
mV/us



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