MAX8668ETET+ Maxim Integrated Products, MAX8668ETET+ Datasheet - Page 4
![IC DC-DC CONV W/DUAL LDO 16TQFN](/photos/6/66/66625/16-tqfn_exp_pad_21-0136_sml.jpg)
MAX8668ETET+
Manufacturer Part Number
MAX8668ETET+
Description
IC DC-DC CONV W/DUAL LDO 16TQFN
Manufacturer
Maxim Integrated Products
Type
Step-Down (Buck)r
Datasheet
1.MAX8668ETEWT.pdf
(18 pages)
Specifications of MAX8668ETET+
Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
4
Voltage - Output
3.3V (2), 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
Output Voltage
0.6 V to 3.3 V
Output Current
900 mA
Input Voltage
2.6 V to 5.5 V
Supply Current
20 uA
Switching Frequency
1.5 MHz
Mounting Style
SMD/SMT
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
1.5MHz Dual Step-Down DC-DC Converters
with Dual LDOs and Individual Enables
(V
4
IN12
1.90
1.80
1.70
1.60
1.50
1.40
1.30
1.20
3500
3000
2500
2000
1500
1000
500
90
80
70
60
50
40
30
20
10
_______________________________________________________________________________________
0
0
0.1
= V
0
0
OUT1 EFFICIENCY vs. LOAD CURRENT
IN34
200
300
OUT2 LOAD REGULATION
SWITCHING FREQUENCY
= 3.6V, circuit of Figure 4, V
OUT1
1
vs. LOAD CURRENT
LOAD CURRENT (mA)
LOAD CURRENT (mA)
400
LOAD CURRENT (mA)
(V
600
OUT1
600
10
900
= 1.2V)
ONLY OUT1 ENABLED
OUT2
800
1200
100
1000
1500
1200
1000
1800
OUT1
= 1.2V, V
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.00
120
100
80
60
40
20
90
80
70
60
50
40
30
20
10
0
0
1.5
2.5
0.1
NO-LOAD SUPPLY CURRENT vs. SUPPLY
OUT2 EFFICIENCY vs. LOAD CURRENT
VOLTAGE ALL REGULATOR ENABLED
vs. INPUT VOLTAGE (600mA LOAD)
2.0
OUT2
3.0
1
OUT1 OUTPUT VOLTAGE
2.5
= 1.8V, V
SUPPLY VOLTAGE (V)
LOAD CURRENT (mA)
INPUT VOLTAGE (V)
3.5
SUPPLY VOLTAGE
FALLING
(V
3.0
SUPPLY VOLTAGE
RISING
OUT2
10
3.5
4.0
= 1.8V)
OUT3
ONLY OUT2 ENABLED
100
Typical Operating Characteristics
4.0
4.5
= 2.8V, V
4.5
1000
5.0
5.0
10000
OUT4
5.5
5.5
= 2.8V, T
120
100
2.00
1.95
1.90
1.85
1.80
1.75
1.70
1.65
1.60
1.25
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
80
60
40
20
0
vs. SUPPLY VOLTAGE OUT1 AND OUT2 ONLY
1.5
2.5
0
A
vs. INPUT VOLTAGE (1200mA LOAD)
SUPPLY VOLTAGE
FALLING
= +25°C, unless otherwise noted.)
2.0
NO-LOAD SUPPLY CURRENT
100
3.0
OUT1 LOAD REGULATION
OUT2 OUTPUT VOLTAGE
2.5
SUPPLY VOLTAGE (V)
LOAD CURRENT (mA)
200
INPUT VOLTAGE (V)
3.5
3.0
SUPPLY VOLTAGE
RISING
3.5
300
4.0
4.0
400
4.5
4.5
500
5.0
5.0
5.5
600
5.5