ISL98607

3. Typical Performance Curves

FN8421 Rev.1.00

Page 8 of 29

Jun.3.19

3.

Typical Performance Curves

TA = +25°C, VIN = 3.7V, Registers VP_OUT, VN_OUT and VBST_OUT = 0x00, DFE252012C (2.5mmx2mm) Toko Inductor,

CVBST = 10µF/0402, CVP = 10µF/0402 and CVN= 2 x 10µF/0402 unless otherwise noted.

Figure 2. Efficiency vs Load - Register 0x0D = 0x04,

Register 0x0F = 0xDF

Figure 3. Efficiency vs Load - Register 0x0D = 0x34,

Register 0x0F = 0xDA

Figure 4. VBST Output Voltage Ripple with No Load

Figure 5. VBST Output Voltage Ripple with 10mA Load

Figure 6. VBST Output Voltage Ripple with 100mA Load

Figure 7. VP and VN Output Voltage Ripple - 10mA Load

80

81

82

83

84

85

86

87

88

89

90

0

0.01

0.02

0.03

0.04

Load (A)

Load Between VP and VN

0

0.01

0.02

0.03

0.04

Load (A)

80

81

82

83

84

85

86

87

88

89

90

Load Between VP and VN

VBST = 5.15V, IBST = No Load, AC-Coupled

Time (µs)

200µs/Div

VBST = 5.15V, IBST = 10mA, AC-Coupled

Time (µs)

10µs/Div

Time (µs)

VBST = 5.15V, IBST = 100mA, AC-Coupled

1µs/Div

Time (µs)

VP = 5V, VN = -5V, IVN =IVP = 10mA, AC-Coupled

50µs/Div

VP

VN

Load Current

VP = 20mV/Div, VN = 50mV/Div, Load Current = 5mA/Div