isl9305 Intersil Corporation, isl9305 Datasheet - Page 14

• Manufacturer Part Number: isl9305
• Description: 3mhz Dual Step-down Converters And Dual Low-input Ldos With I 2c Compatible Interface
• Manufacturer: Intersil Corporation

Typical Operating Conditions
FIGURE 11. DCD OUTPUT TRANSIENT RESPONSE (V
FIGURE 15. DCD OUTPUT VOLTAGE vs LOAD (V
FIGURE 13. START-UP SEQUENCY (V
1.83
1.82
1.81
1.80
1.79
1.78
1.77
1.76
1
STEP: 80mA to 800mA)
PFM/PWM)
IOUT_VODCD1 (500mA/DIV
V
IN
VODCD1 (100mV/DIV
= 5.5V
VODCD2 (10mV/DIV)
10
OUTPUT CURRENT (mA)
V
IN
14
= 3.6V
100
VODCD2 (1V/DIV)
VOLDO2 (2V/DIV)
V
VOLDO1 (1V/DIV)
VODCD1 (2V/DIV)
IN
IN
= 2.8V
= 4.2V, NO LOAD)
OUT
1000
= 1.2V,
IN
= 4.2V, LOAD
10000
(Continued)
ISL9305
FIGURE 12. LDO OUTPUT TRANSIENT RESPONSE (V
FIGURE 14. DCD1 and DCD2 SWITCHING WAVEFORM (V
FIGURE 16. DCD OUTPUT VOLTAGE vs LOAD (V
1.23
1.22
1.21
1.20
1.19
1.18
1.17
LOAD: 30mA TO 300mA)
LOAD ON TWO CHANNELS)
1
PFM/PWM)
V
IN
= 5.5V
VOLDO2 (10mV/DIV)
IOUT_LDO1 (200mA/DIV
IL1 (200mA/DIV)
VOLDO1 (100mV/DIV
IL2 (200mA/DIV)
10
SW1 (5V/DIV)
SW2 (5V/DIV)
V
IN
OUTPUT CURRENT (mA)
= 3.6V
100
V
IN
= 2.8V
OUT
1000
= 1.2V,
IN
November 8, 2010
= 4.2V, STEP
IN
= 5V, FULL
10000
FN7605.0