Manual

MAX8710/MAX8711/MAX8712
Low-Cost Linear-Regulator
LCD Panel Power Supplies
6 _______________________________________________________________________________________
Note 1: Specifications to -40°C and +100°C are guaranteed by design, not production tested.
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. V
IN
= V
INL
= V
SUPCP
= 12V, V
OUTL
= V
SUPB
= 10V, V
SRC
= 27V, T
A
= -40°C to +100°C, unless otherwise noted.)
(Note 1)
PARAMETER CONDITIONS
MIN
TYP
MAX
UNITS
SEQUENCE CONTROL
SHDN Input Low Voltage 0.6 V
SHDN Input High Voltage 2.0 V
DLP Capacitor Charge Current During startup, V
DLP
= 1.0V 4 6 µA
DLP Turn-On Threshold
2.375 2.625
V
POSITIVE GATE-DRIVER TIMING AND CONTROL SWITCHES
SRC Input Current V
MODE
= V
REF
, V
DLP
= 3V, CTL = high 250 µA
DRN Input Current V
MODE
= V
REF
, V
DRN
= 8V, V
DLP
= 3V, V
CTL
= 0V 40 µA
SRC Switch On-Resistance V
MODE
=V
REF
, V
DLP
= 3V, CTL = high 30 Ω
Mode 2 MODE Capacitor Charge
Current
V
MODE
< MODE current-source stop voltage threshold
42 64 µA
MODE Voltage Threshold for
Enabling DRN Switch Control in
Mode 2
2.3 2.7 V
Typical Operating Characteristics
(Circuit of Figure 1. V
IN
= V
INL
= V
SUPCP
= 12V, V
OUTL
= V
SUPB
= 10V, V
SRC
= 10V, T
A
= 0°C to +85°C. Typical values are at T
A
=
+25°C, unless otherwise noted.)
LINEAR-REGULATOR LINE REGULATION
MAX8710/11/12 toc01
INPUT VOLTAGE (V)
OUTPUT VOLTAGE ERROR (%)
2624222018161412
-4
-3
-2
-1
0
1
-5
10 28
V
OUTL
= 10V
I
OUTL
= 50mA
I
OUTL
= 300mA
LINEAR-REGULATOR LOAD REGULATION
MAX8710/11/12 toc02
LOAD CURRENT (mA)
OUTPUT VOLTAGE ERROR (%)
10010
-1.0
-0.5
0
0.5
-1.5
11000
V
OUTL
= 10V
V
INL
= 12V
LINEAR-REGULATOR LOAD-TRANSIENT
RESPONSE
MAX8710/11/12 toc03
20µs/div
A
10V
B
0mA
A: V
OUTL
, 50mV/div, AC-COUPLED
B: I
OUTL
, 200mA/div