Manual

MAX8621Y/MAX8621Z
Dual Step-Down DC-DC Power-Management ICs
for Portable Devices
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 3.7V, C
IN1
= 10µF, C
IN2
= C
IN3
= 4.7µF, C
OUT1
= C
OUT2
= 4.7µF, C
OUT3
= C
OUT4
= 2.2µF, C
REFBP
= 0.01µF, T
A
= -40°C to
+85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Notes 1, 2)
PARAMETER CONDITIONS
MIN TYP MAX
UNIT
OUT1 (LDO1)
T
A
= 0°C to +85°C
-1.3 +0.6 +2.0
I
LOAD
= 1mA, 3.7V ≤ V
IN
≤ 5.5V,
relative to V
OUT(NOM)
T
A
= -40°C to +85°C -2.3 +2.5
Output Voltage Accuracy
I
LOAD
= 150mA, relative to V
OUT(NOM)
0
%
Output Current 300 mA
Current Limit V
OUT1
= 0V
310 550
940 mA
Dropout Voltage I
LOAD
= 200mA, T
A
= +85°C
200
420 mV
Load Regulation
V
IN
= greater of 3.7V or (V
OUT(NOM)
+ 0.7V),
1mA < I
LOAD
< 300mA, V
SEL1
= V
SEL2
= 0V
1.2 %
Power-Supply Rejection
∆V
OUT1
/∆V
IN2
10Hz to 10kHz, C
OUT1
= 4.7µF, I
LOAD
= 30mA 60 dB
Output Noise Voltage (RMS) 100Hz to 100kHz, C
OUT1
= 4.7µF, I
LOAD
= 30mA 45
µV
RMS
0 < I
LOAD
< 300mA 4.7
Output Capacitor for Stable
Operation
0 < I
LOAD
< 150mA 2.2
µF
Ground Current I
LOAD
= 500µA 21 µA
OUT2 (LDO2)
T
A
= 0°C to +85°C
-1.3 +0.6 +2.0
I
LOAD
= 1mA, 3.7V ≤ V
IN_
≤ 5.5V,
relative to V
OUT(NOM)
T
A
= -40°C to +85°C -2.3 +2.5
Output Voltage Accuracy
I
LOAD
= 150mA, relative to V
OUT(NOM)
0
%
Output Current 300 mA
Current Limit V
OUT2
= 0V
310 550
940 mA
Dropout Voltage I
LOAD
= 200mA , T
A
= +85°C
200
420 mV
Load Regulation 1mA < I
LOAD
< 300mA, V
SEL1
= V
SEL2
= 0V 1.2 %
Power-Supply Rejection
∆V
OUT2
/∆V
IN2
10Hz to 10kHz, C
OUT2
= 4.7µF, I
LOAD
= 30mA 60 dB
Output Noise Voltage (RMS) 100Hz to 100kHz, C
OUT2
= 4.7µF, I
LOAD
= 30mA 45
µV
RMS
0 < I
LOAD
< 300mA 4.7
Output Capacitor for Stable
Operation
0 < I
LOAD
< 150mA 2.2
µF
Ground Current I
LOAD
= 500µA 21 µA
OUT3 (LDO3)
T
A
= 0°C to +85°C
-1.3 +0.3 +2.0
I
LOAD
= 1mA, 3.7V ≤ V
IN_
≤ 5.5V,
relative to V
OUT(NOM)
T
A
= -40°C to +85°C -2.3 +2.5
Output Voltage Accuracy
I
LOAD
= 75mA, relative to V
OUT(NOM)
0
%
Output Current 150 mA
Current Limit V
OUT3
= 0V
165 360
650 mA
Dropout Voltage I
LOAD
= 100mA , T
A
= +85°C
100
210 mV
Load Regulation 1mA < I
LOAD
< 150mA, V
SEL1
= V
SEL2
= 0V 0.6 %