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TPS65530 Fiches technique(PDF) 6 Page - Texas Instruments

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No de pièce TPS65530
Description  FULLY INTEGRATED 8-CHANNEL DC/DC CONVERTER FOR DIGITAL STILL CAMERAS
Download  30 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS65530 Fiches technique(HTML) 6 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
TPS65530
SLVS744B – OCTOBER 2007 – REVISED NOVEMBER 2007
0
°C ≤ T
J ≤ 125°C, 1.8 V ≤ VCC2 ≤ 5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP(1)
MAX
UNIT
For All Circuits
ICC_Iq
VCC2 = VPS = 3.6 V, XSLEEP = AGND
1
10
µA
ICC_sleep
VCC2 = 3.6 V, VPS = 5 V, XSLEEP = AGND,
40
70
Consumption current at PS (pin 29)
ENAFE = VCC2
ICC_PWM
VCC2 = 3.6 V , VPS = 5 V, XSLEEP = VCC2,
20
30
mA
ENAFE = VCC2, EN56 = VCC2, EN7 = VCC2
ICC_Iq2
VCC2 = VPS = 3.6 V, XSLEEP = AGND
1
10
µA
ICC_sleep2
VCC2 = 3.6 V, VPS = 5 V, XSLEEP = AGND,
12
30
Consumption current at VCC2 (pin 12)
ENAFE = VCC2
ICC_PWM2
VCC2 = 3.6 V , VPS = 5 V, XSLEEP = VCC2,
0.3
1.0
mA
ENAFE = VCC2, EN56 = VCC2, EN7 = VCC2
TSD
Thermal shutdown temperature(2)
150
°C
V(UV_ON)
UVLO detect level
VCC2 from 0 V to 5.5 V, XSLEEP = VCC2
1.25
1.4
1.55
V
V(UV_OFF) UVLO hysteresis
VCC2 from 5.5 V to 0 V
50
100
150
mV
OSC
Internal OSC frequency
VCC2 = 3.6 V
1.35
1.5
1.65
MHz
OSC_SUB
CH5/6/7/8 switching frequency
OSC = 1.5 MHz, VPS = 5 V
750
KHz
REF output voltage
XSLEEP = VCC2
2.72
2.8
3.03
V
Iss
SS source current
S/S=AGND
6
10
14
µA
Pulldown resistance at XSLEEP,
XSLEEP = ENAFE = EN56 = EN7 = SEQ56 = 3 V
200
k
ENAFE, EN56, EN7, SEQ56
CH1
VCC1
Supply voltage
1.5
5.5
V
VOUT1
Output voltage(2)
0.9
2.5
V
VCC1 > 2.4 V, VOUT1 = 1.2 V,
IOUT1
Output current(2)
Feedback resistance: R1 = 330 k
Ω,
600
mA
R2 = 330 k
VFB1
FB1 reference voltage
No load
0.59
0.6
0.61
V
Overcurrent protection threshold
0.9
1.9
A
Overvoltage protection threshold
0.67
0.75
0.83
V
(sensing at FB1 pin)
High-side Nch FET ON resistance(3)
VPS = 5 V
320
500
m
Low-side Nch FET ON resistance(3)
VPS = 5 V
200
250
m
Trigger voltage to start CH3
0.48
V
Trigger voltage to power off LDO
0.25
V
CH2
VCC2
Supply voltage
1.5
5.5
V
VOUT2
Output voltage(2)
2.5
3.6
V
VCC2 > 2.4 V, VOUT2 = 3.3 V,
IOUT2
Output current(2)
Feedback resistance: R1 = 180 k
Ω,
600
mA
R2 = 820 k
VFB2
FB2 reference voltage
No load
0.595
0.605
0.615
V
Overcurrent protection threshold
2.6
3.3
A
Overvoltage protection threshold
0.67
0.75
0.83
V
(sensing at FB2 pin)
High-side FET
VPS = 5 V
100
210
ON resistance
Buck
m
side(3)
Low-side FET
VPS = 5 V
450
600
ON resistance
(1)
TA = 25°C
(2)
Specified by design
(3)
The value of FET On resistance includes the resistance of bonding wire.
6
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