MAX8668ETEW+ Maxim Integrated Products, MAX8668ETEW+ Datasheet - Page 3

• Manufacturer Part Number: MAX8668ETEW+
• Description: IC DC-DC CONV W/DUAL LDO 16TQFN
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX8668ETEW+

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 4
• Voltage - Output: 3V, 3.3V, 0.6 ~ 3.3 V (2)
• Current - Output: 600mA, 1.2A
• Frequency - Switching: 1.5MHz
• Voltage - Input: 2.6 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TQFN Exposed Pad
• Power - Output: 1.67W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS (continued)
(V
Note 1: All devices are 100% production tested at T
Maximum Adjustable Output
Voltage
FB1, FB2 Regulation Voltage
OUT1, OUT2 Regulation Voltage
FB1, FB2 Line Regulation
OUT1, OUT2 Line Regulation
FB1, FB2 Bias Current
OUT1 Current Limit
OUT2 Current Limit
OUT1 On-Resistance
OUT2 On-Resistance
Rectifier-Off Current Threshold
(I
LX Leakage Current
Minimum On-Time
Minimum Off-Time
LDO REGULATORS
Supply Current
Output-Voltage Accuracy
Line Regulation
Dropout Voltage
Current Limit
Soft-Start Ramp Time
Output Noise
Power-Supply Rejection Ratio
Shutdown Output Resistance
TIMING (See Figure 2)
Power-On Time (t
Enable Time (t
IN34
LXOFF
= V
)
IN12
PARAMETER
= 3.6V, T
1.5MHz Dual Step-Down DC-DC Converters
EN
)
PWRON
_______________________________________________________________________________________
A
)
= -40°C to +85°C, unless otherwise noted. Typical values are at T
with Dual LDOs and Individual Enables
MAX8668
MAX8668, no load,
V
MAX8667ETEJS+, no load, V
falling
MAX8668, V
MAX8667, V
MAX8668, shutdown mode
MAX8668, V
pMOSFET switch (I
nMOSFET rectifier (valley current)
pMOSFET switch (I
nMOSFET rectifier (valley current)
pMOSFET switch, I
nMOSFET rectifier, I
pMOSFET switch, I
nMOSFET rectifier, I
LX_ = 5.5V
Each LDO
1mA load, T
1mA to 300mA load
V
V
V
To 90% of final value
100Hz to 100kHz, 30mA load, V
f < 1kHz, 30mA load
OUT1, OUT2
OUT3, OUT4
OUT1, OUT2
OUT3, OUT4
FB_
IN34
IN34
OUT3
falling
= 3.6V to 5.5V, 1mA load
= 1.8V, 300mA load
, V
OUT4
A
IN12
IN12
FB1
= +25°C
A
90% of nominal value
= +25°C. Limits over the operating temperature range are guaranteed by design.
= 0.5V
= 2.6V to 5.5V
= 2.8V to 5.5V
LX1
LX2
LIMP1
LIMP2
LX1
LX2
CONDITIONS
= -400mA
= -400mA
= 400mA
= 400mA
)
)
OUT_
OUT3
T
T
T
T
T
T
and V
A
A
A
A
A
A
= +25°C
= -40°C to +85°C
= +25°C
= -40°C to +85°C
= +25°C
= +85°C
OUT4
= 2.8V
A
= +25°C.) (Note 1)
0.588
0.582
1.274
1.261
1333
1200
MIN
-1.5
-3.0
700
500
375
-1
0.600
0.600
1.300
1.300
0.003
1667
1500
TYP
0.01
0.05
0.01
0.12
0.12
900
750
100
130
420
3.3
0.1
0.3
0.3
0.1
0.1
60
50
20
75
57
25
45
15
35
1
0.612
0.618
1.326
1.339
MAX
1100
1000
2000
1800
+1.5
+3.0
0.27
0.27
120
250
465
0.6
0.6
+1
UNITS
µV
%/V
%/V
%/V
mA
mA
mA
mV
mA
ms
dB
kΩ
µA
µA
µA
ns
ns
µs
µs
%
Ω
Ω
V
V
V
RMS
3