MAX1677EEE Maxim Integrated Products, MAX1677EEE Datasheet - Page 4
![IC CONV DC-DC STEP-UP 16-QSOP](/photos/6/61/66127/175-16-qsop_sml.jpg)
MAX1677EEE
Manufacturer Part Number
MAX1677EEE
Description
IC CONV DC-DC STEP-UP 16-QSOP
Manufacturer
Maxim Integrated Products
Type
Step-Up (Boost)r
Datasheet
1.MAX1677EEE.pdf
(16 pages)
Specifications of MAX1677EEE
Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
2
Voltage - Output
3.3V or Adj Main, -28 ~ 28 V or Adj Secondary
Current - Output
350mA
Frequency - Switching
300kHz
Voltage - Input
0.7 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-QSOP
Power - Output
696mW
Output Voltage
2.5 V to 5.5 V
Output Current
350 mA
Input Voltage
0.7 V to 5.5 V
Supply Current
35 uA
Switching Frequency
300 KHz
Mounting Style
SMD/SMT
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MAX1677EEE
Manufacturer:
MAXIM
Quantity:
247
Part Number:
MAX1677EEE
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
MAX1677EEE+
Manufacturer:
MAXIM/美信
Quantity:
20 000
Compact, High-Efficiency, Dual-Output
Step-Up and LCD Bias DC-DC Converter
ELECTRICAL CHARACTERISTICS
(V
4
Note 1: The MAX1677 operates in bootstrap mode (operates from the output voltage). Once started, it will operate down to 0.7V
Note 2: C
Note 3: In low-power mode (CLK/SEL = GND), the output voltage regulates 1% higher than in low-noise mode (CLK/SEL = OUT or
Note 4: The device is in a startup mode when V
Note 5: Specifications to -40°C are guaranteed by design and not production tested.
LCD BIAS DC-DC
GENERAL
Supply Current
Main DC On, LCD Off
Supply Current All On,
Main DC-DC in PFM Mode
Supply Current All On,
Main DC-DC in PWM Mode
Supply Current in Shutdown
MAIN
Output Voltage
FB Regulation Voltage
Startup to Normal Mode Transition
Voltage (Note 4)
LX Leakage Current
LX Current Limit
Internal Oscillator
External Clock Frequency Range
LOGIC
ON Input Threshold
LCDON, LCDPOL, CLK/SEL
Input Threshold
LBI Falling Threshold
LBO Output Low Voltage
LCD BIAS DC-DC
LCDLX Switch Current Limit
LCDFB Set Point
OUT
_______________________________________________________________________________________
= 3.3V, C
input. If V
synchronized).
REF
PARAMETER
= 0.22µF for applications where I
REF
IN
= 0.1µF, POUT = OUT, T
exceeds the set V
OUT
V
V
SYMBOL
V
V
V
I
I
I
LOCKOUT
I
V
LX(LEAK)
ON(HIGH)
LX(PWM)
LCDOFF
ON(LOW)
LX(PFM)
FB(REG)
LBO(LO)
V
LBI(TH)
I
I
, V
PWM
V
PFM
V
OUT
f
IH
IL
A
OUT
= -40°C to +85°C, unless otherwise noted. ) (Note 5)
REF
OUT
will follow one diode drop below V
> 10µA.
is below this value.
No load, current into OUT
No load, current into OUT
No load, current into OUT
FB = GND, 0 ≤ I
CLK/SEL = OUT (Note 3)
Adjustable mode, CLK/SEL = OUT (Note 3)
N-channel PWM mode
N-channel PFM mode
CLK/SEL = OUT
1.1V < V
Sink current = 1mA
LCDPOL = OUT or GND
LCDPOL connected to OUT or GND
through 50kΩ
Negative LCD, LCDPOL = GND
Positive LCD, LCDPOL = OUT
OUT
< 5.5V
CONDITIONS
LX
≤ 350mA,
IN
.
0.8V
0.8V
3.17
1.22
1.22
MIN
550
250
240
200
599
300
150
2.1
-20
OUT
OUT
0.2V
0.2V
MAX
3.46
1.28
1.28
+20
300
900
500
360
400
OUT
629
450
300
OUT
2.4
0.1
40
60
5
5
UNITS
kHz
kHz
mA
mV
mA
mV
µA
µA
µA
µA
µA
V
V
V
V
V
V
V