MAX8614AETD+T Maxim Integrated Products, MAX8614AETD+T Datasheet - Page 8

• Manufacturer Part Number: MAX8614AETD+T
• Description: IC DC-DC CONV DL CCD 14TDFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX8614AETD+T

• Applications: Converter, CCD
• Voltage - Input: 2.7 ~ 5.5 V
• Number Of Outputs: 2
• Voltage - Output: Adjustable up to 24V, Adjustable down to -10V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-TDFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Dual-Output (+ and -) DC-DC
Converters for CCD
(T
8
A
PIN
= +25°C, V
10
11
12
13
14
_______________________________________________________________________________________
—
1
2
3
4
5
6
7
8
9
ONBST
ONINV
1.2490
1.2485
1.2480
1.2475
1.2470
1.2465
1.2460
1.2455
1.2450
NAME
PGND
AV
GND
FBN
SEQ
REF
FBP
PVP
V
LXN
FLT
LXP
CC
EP
CC
CC
= V
-40
AVCC
Enable Logic Input. Connect ONBST to AV
as an independent control of the step-up converter.
Negative Output Feedback Input. Connect a resistor-divider between the negative output and REF with the
center to FBN to set the negative output voltage.
Bias Supply. AV
1.25V Reference Voltage Output. Bypass with a 0.22µF ceramic capacitor to GND.
Ground. Connect GND to PGND with a short trace.
Fault Open-Drain Output. Connect a 100kΩ resistor from FLT to AV
and is high impedance in shutdown.
Positive Output-Voltage Feedback Input. Connect a resistor-divider between the positive output and GND
with the center to FBP to set the positive output voltage. FBP is high impedance in shutdown.
Sequence Logic Input. When SEQ = low, power-on sequence can be independently controlled by ONBST
and ONINV. When SEQ = high, the positive output powers up before the negative output.
Enable Logic Input. Connect ONINV to AV
independent control of the inverter.
Positive Output Switching Inductor Node. LXP is high impedance in shutdown.
Power Ground. Connect PGND to GND with a short trace.
True-Shutdown Load Disconnect Switch. Connect one side of the inductor to PVP and the other side to LXP.
PVP is high impedance in shutdown.
Power Input Supply. V CC supplies power for the step-up and inverting DC-DC converters. V
connected to AV
Negative Output Switching Inductor Node. LXN is high impedance in shutdown.
Exposed Pad. Connect exposed paddle to ground.
-15
REFERENCE VOLTAGE
= 3.6V, SEQ = GND, Figure 1, unless otherwise noted.)
vs. TEMPERATURE
TEMPERATURE (°C)
10
35
CC
CC
powers the IC. AV
.
60
Typical Operating Characteristics (continued)
85
CC
must be connected to V
CC
CC
for automatic startup of the inverter, or use ONINV as an
for automatic startup of the step-up converter, or use ONBST
FUNCTION
1.006
1.005
1.004
1.003
1.002
1.001
1.000
0.999
0.998
0.997
0.996
-40
-15
CC
SWITCHING FREQUENCY
CC
vs. TEMPERATURE
.
. FLT is active low during a fault event
TEMPERATURE (°C)
10
V
I
V
I
35
OUT
OUT
INV
BST
= 100mA
= -7.5V
= 50mA
Pin Description
= +15V
60
CC
85
must be