参数资料
型号: CS5332GDW28
厂商: ON SEMICONDUCTOR
元件分类: 稳压器
英文描述: 1.5 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO28
封装: SOP-28
文件页数: 16/20页
文件大小: 400K
代理商: CS5332GDW28
CS5332
http://onsemi.com
5
ELECTRICAL CHARACTERISTICS (continued) (0°C < TA < 70°C; 0°C < TJ < 125°C; 4.7 V < VCCL < 14 V; 8.0 V < VCCH < 20 V;
CGATE(H) = 3.3 nF, CGATE(L) = 3.3 nF, RR(OSC) = 32.4 k, CCOMP = 1.0 nF, CSS = 0.1 μF, CREF = 0.1 μF, DAC Code 10000, CVCC = 1.0 μF,
ILIM ≥ 1.0 V; unless otherwise specified.)
Characteristic
Unit
Max
Typ
Min
Test Conditions
PowerGood Output
Power Good Fault Delay
CSREF = VDAC to VDAC ± 15%
25
50
125
μs
Output Low Voltage
CSREF = 1.0 V, IPWRGD = 4.0 mA
0.25
0.40
V
Output Leakage Current
CSREF = 1.45 V, PWRGD = 5.5 V
0.1
10.0
μA
Lower Threshold
% of Nominal VID Code
18
14
10
%
Upper Threshold
1.9
2.0
2.1
V
Voltage Feedback Error Amplifier
VFB Bias Current (Note 2)
1.0 V < VFB < 1.9 V
28.5
31
33.5
μA
COMP Source Current
COMP = 0.5 V to 2.0 V;
VFB = 1.8 V; DAC = 00000
15
30
60
μA
COMP Sink Current
COMP = 0.5 V to 2.0 V;
VFB = 1.9 V; DAC = 00000
15
30
60
μA
COMP Max Voltage
VFB = 1.8 V COMP Open; DAC = 00000
2.4
2.7
V
COMP Min Voltage
VFB = 1.9 V COMP Open; DAC = 00000
0.1
0.2
V
Transconductance
10 μA < ICOMP < +10 μA
32
mmho
Output Impedance
2.5
Open Loop DC Gain
Note 3
60
90
dB
Unity Gain Bandwidth
0.01 μF COMP Capacitor
400
kHz
PSRR @ 1.0 kHz
70
dB
Soft Start
Soft Start Charge Current
0.2 V ≤ SS ≤ 3.0 V
15
30
50
μA
Soft Start DisCharge Current
0.2 V ≤ SS ≤ 3.0 V
4.0
7.5
13.0
μA
Hiccup Mode Charge/Discharge Ratio
3.0
4.0
Peak Soft Start Charge Voltage
3.3
4.0
4.2
V
Soft Start DisCharge Threshold Voltage
0.20
0.27
0.34
V
PWM Comparators
Minimum Pulse Width
Measured from CSx to GATE(H)x
V(VFB) = V(CSREF) = 1.0 V, V(COMP) = 1.5 V
60 mV step applied between VCSX and
VCREF
350
515
ns
Channel Start Up Offset
V(CS1) = V(CS2) = V(VFB) = V(CSREF) = 0 V;
Measure V(COMP) when GATE(H)1,
GATE(H)2, switch high
0.3
0.4
0.5
V
2. The VFB Bias Current changes with the value of ROSC per Figure 4.
3. Guaranteed by design. Not tested in production.
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