MAX8662_08 Datasheet, PDF (17/37 Pages) Maxim Integrated Products – Power-Management ICs for Single-Cell, Li+ Battery-Operated Devices

Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V_DC = 5V, R_PSET = 1.5kΩ, R_ISET = 3kΩ, V_OUT1 = 3.3V, V_OUT2 = 1.3V, SL1 = SL2 = open, V_CEN = 0V, V_PEN1 =
V_PEN2 = 5V, C_OUT1 = 2 x 10µF, C_OUT2 = 2 x 10µF, C_OUT3 = 0.1µF, C_OUT4 = 4.7µF, C_OUT5 = 1µF, C_OUT6 = 2.2µF, C_OUT7 = 1µF, CT =
0.068µF, C_REF = C_VL = 0.1µF, R_THM = 10kΩ, L1 = 3.3µH, L2 = 4.7µH, L3 = 22µH, GND = PG1 = PG2 = PG3 = 0, T_A = +25°C, unless
otherwise noted.)
OUT7 REGULATOR LOAD-
OUT7 REGULATOR LINE-
TRANSIENT RESPONSE
TRANSIENT RESPONSE
MAX8662/63 toc68
MAX8662/63 toc69
5V
V_IN67 ^3.6V
2V/div
I_OUT7
100mA/div
V_OUT7
AC-COUPLED
50mV/div
V_BAT = 4.0V
I_OUT7 = 10mA TO 150mA TO 10mA
40μs/div
V_OUT7
AC-COUPLED
20mV/div
I_OUT7 = 10mA
100μs/div
OUT7 ENABLE AND DISABLE RESPONSE
MAX8662/63 toc70
V_EN7
0V
2V/div
V_OUT7 0V
2V/div
OUT7 REGULATOR DROPOUT VOLTAGE
vs. LOAD CURRENT
70
THE SLOPE OF THIS LINE SHOWS THAT
60
THE DROPOUT RESISTANCE OF AN
AVERAGE PART AND BOARD
COMBINATION IS 391mΩ.
50
40
30
20
10
VL REGULATOR LOAD REGULATION
3.31
3.30
3.29
3.28
V_IN = 5.5V
3.27
3.26
V_IN = 4.35V
3.25
0
200μs/div
0
VL REGULATOR LINE REGULATION
3.50
R_LOAD = 3.3kΩ
3.45
3.40
3.35
3.30
3.25
3.20
3.15
3.10
3.05
3.00
3
4
5
6
7
8
V_IN (V)
25 50 75 100 125 150
I_OUT (mA)
3.24
0 1 2 3 4 5 6 7 8 9 10
LOAD CURRENT (mA)
OPEN-DRAIN OUTPUT VOLTAGE LOW
vs. SINK CURRENT
0.5
THE SLOPE OF THIS LINE SHOWS THAT
THE PULLDOWN RESISTANCE IS 11Ω.
0.4 ^VIN ^{= 5.0V}
V_BAT = 4.0V
0.3
0.2
0.1
0
0
PULLDOWN DEVICE HAS A
20mA STEADY-STATE RATING
5 10 15 20 25 30 35 40
I_SINK (mA)
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