MAX8668ETET+ Maxim Integrated Products, MAX8668ETET+ Datasheet - Page 7
![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
(V
IN12
= V
IN34
= 3.6V, circuit of Figure 4, V
1.5MHz Dual Step-Down DC-DC Converters
V
OUT2
V
LX2
I
L2
_______________________________________________________________________________________
500mA LOAD
OUT2 HEAVY-LOAD SWITCHING
with Dual LDOs and Individual Enables
WAVEFORMS
OUT3 NOISE
400ns/div
1ms/div
OUT1
V
I
LOAD
OUT3
= 1.2V, V
MAX8667/88 toc23
MAX8667/88 toc25
Typical Operating Characteristics (continued)
= 100Ω
= 2.80V
OUT2
20mV/div
500mA/div
2V/div
100µV/div
= 1.8V, V
OUT3
= 2.8V, V
70
60
50
40
30
20
10
0
0.01
OUT4
POWER-SUPPLY REJECTION RATIO
0.1
= 2.8V, T
vs. FREQUENCY
FREQUENCY (kHz)
OUT4 NOISE
1
1ms/div
A
= +25°C, unless otherwise noted.)
10
V
C
I
V
I
LOAD
OUT3
OUT3
LOAD
OUT4
MAX8667/88 toc26
100
= 100Ω
= 2.80V
= 4.7µF
= 100Ω
= 3.30V
1000
100µV/div
7