DS5028E Datasheet, PDF (7/41 Pages) Richtek Technology Corporation – Integrated PMIC with 4-Channel Synchronous Buck Converters, 8 LDOs, and MTP Non-Volatile Memory for Industrial Applications

RT5028E
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Buck1 to Buck4
Input Voltage
Output Voltage
Consum ption
Current
Efficiency Peak
Output Voltage
Accuracy
V_INB
V_OUTB
Buck1 I²C Programmable per step 25mV
Buck2 I²C Programmable per step 25mV
Buck3 I²C Programmable per step 50mV
Buck4 I²C Programmable per step 50mV
3.3 -- 5.5 V
0.7 -- 1.8
0.7 -- 1.8
V
0.7 -- 3.6
0.7 -- 3.6
I_VINB AUTO Mode I_OUT = 0mA, Each Buck
10 20 40 A
Eff
V_OUT = 1.2V, V_IN = ^{ILOAD = CCM}
3.6V
I_LOAD = 1mA
-- 88 --
%
-- 80 --
V_OUTAcc
3.1V < V_IN < 5.5V, ^{As VOUTB1S to VOUTB4S  1V.}
1mA < I_OUT < I_{MAX As VOUTB1S to VOUTB4S < 1V.}
3
30
--
--
3
%mV
30
Output Voltage
Ripple
V_Rip
Output Voltage
Temperature
Coefficient
Switching
Frequency
f_SW
Switching
Frequency Accuracy
I_OUT = 1mA, C_OUT = 10F, 2MHz
I_OUT = 1A, C_OUT = 10F, 2MHz
I²C Programmable
1MHz  f_SW
f_SW  1MHz
-- 25 --
mV
-- 8 --
-- ±100 -- ppm/C
0.43 --
10 --
20 --
2 MHz
10
%
20
Suggest Inductor
L_Buck
Buck1
-- 2.2 -- H
3.1 4.4 5.8
Peak Current Limit OCP
Buck2
Buck3
2.8 4 5.2
A
2.6 3.7 4.8
Under-Voltage
Protection
UVP
Buck4
VOUTB1S to VOUTB4S < 0.66 x (V_OUT Target)
Buck1
2.8 4.1 5.3
56 66 76 %
2.4 -- --
Maximum Output
Current
I_MAX
Buck2
Buck3
2 -- --
A
1.6 -- --
Buck4
2.0 -- --
Output Transient
Response
High-Side
On-Resistance
Low-Side
On-Resistance
V_peak
R_pon
R_non
0.8A to 1.6A at 20s, V_OUT = 1.2V
Buck1 and Buck2
V_IN = 3.7V
V_IN = 3.7V
4 -- 4
%
50 150 250 m
40 110 160 m
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS5028E-00 October 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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