MAX1885EUP-T Maxim Integrated, MAX1885EUP-T Datasheet - Page 18

• Manufacturer Part Number: MAX1885EUP-T
• Description: LCD Drivers Quad-Output TFT LCD DC-DC Converter with Buffer
• Manufacturer: Maxim Integrated

Specifications of MAX1885EUP-T

• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Package / Case: TSSOP-20
• Mounting Style: SMD/SMT

Quad-Output TFT LCD DC/DC
Converters with Buffer
MAX1778/MAX1880–MAX1885
18
MAX1778
MAX1881
14
15
16
17
18
19
20
21
22
23
24
—
MAX1880
MAX1882
13–15
—
—
16
17
18
19
20
21
22
23
24
PIN
MAX1883
MAX1884
15, 16
12
13
14
17
18
19
20
—
—
—
—
MAX1885
11–13,
15, 16
—
—
14
—
—
—
—
17
18
19
20
LDOOUT
FLTSET
NAME
DRVN
SUPN
PGND
TGND
SUPP
DRVP
FBL
RDY
N.C.
LX
Linear Regulator Output. Sources up to 40mA. Bypass to GND with
Voltage Setting Input. Connect a resistive divider from the linear
Fault Trip-Level Set Input. Connect to a resistive divider between
Negative Charge-Pump Driver Supply Voltage. Bypass to power
Negative Charge-Pump Driver Output. Output high level is V
a ceramic capacitor determined by:
regulator output (V
REF and GND to set the main step-up converter’s and positive
charge pump’s fault thresholds between 0.67 x V
V
ground (PGND) with a 0.1µF capacitor.
and low level is PGND.
Positive Charge-Pump Driver Supply Voltage. Bypass to power
ground (PGND) with a 0.1µF capacitor.
Positive Charge-Pump Driver Output. Output high level is V
and low level is PGND
Power Ground. Connect to analog ground (GND) underneath the
IC.
Main Step-Up Regulator Power MOSFET N-Channel Drain. Place
output diode and output capacitor as close as possible to PGND.
Must be connected to ground.
Active-Low, Open-Drain Output. Indicates all outputs are ready.
On-resistance is 125Ω (typ).
No Connection. Not internally connected.
REF
. Connect to GND for the preset fault threshold (0.9 x V
C
LDOOUT
Pin Description (continued)
LDOOUT
≥
) to FBL to analog ground (GND).
FUNCTION
0 5
.
ms X
⎛
⎜
⎝
I
LDOOUT MAX
V
LDOOUT
(
REF
)
⎞
⎟
⎠
Maxim Integrated
and 0.85 x
SUPP
REF
SUPN
).