Datasheet

ADP1660 Data Sheet
Rev. 0 | Page 8 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
I
LED
= LED current, V
LED
= LED output voltage, I
BAT
= battery current.
CH1 5.00V CH2 1.00A
CH4 2.00VCH3 500mA
M800µs
3
4
2
1
T 200µs
V
LED1
I
LED1
STROBE
INDUCTOR CURRENT
11018-005
Figure 5. Startup, Flash Mode, V
IN
= 3.6 V, I
LED1
= I
LED2
= 750 mA
CH1 5.00V CH2 100mA
CH4 2.00VCH3 100mA
M8.00ms
3
4
2
1
T 2.00ms
V
LED1
I
LED1
I
LED2
GPIO (TORCH)
11018-006
Figure 6. Startup, Torch Mode, V
IN
= 3.6 V, I
LED1
= I
LED2
= 150 mA
CH1 5.00V CH2 1.00A
CH4 5.00VCH3 500mA
M400µs
3
4
2
1
T 100µs
V
LED1
I
LED1
STROBE
INDUCTOR CURRENT
11018-007
Figure 7. Torch Current to 750 mA Flash Transition, I
LED1
= I
LED2
= 50 mA
CH1 2.00V CH2 100mA
CH3 50.0mA
M800µs
3
2
1
T 100µs
I
LED1
SW
INDUCTOR CURRENT
11018-008
Figure 8. Switching Waveforms, Flash Mode, I
LED1
= I
LED2
= 750 mA
CH1 1.00V CH2 200mA
CH4 100mACH3 1.00V
M20.0µs
1
3
2
4
T 0.00000s
V
LED1
V
IN
11018-009
I
LED1
INDUCTOR CURRENT
A CH2 196mA
Figure 9. Pass-Through to Boost Mode Transition, Single LED, I
LED1
= 50 mA
CH1 5.00V CH2 1.00A
CH4 500mVCH3 200mA
M20µs
3
4
2
1
T 10µs
V
LED1
I
LED1
I
BAT
GPIO (TxMASK)
1
1018-010
Figure 10. Entry into TxMASK Mode, I
LED1
= I
LED2
= 750 mA to 250 mA