Rainbow Electronics MAX8712 - Manual (Page 6)

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 (%)
26 24 22 20 18 16 14 12
-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 (%)
100 10
-1.0
-0.5
0
0.5
-1.5
1 1000
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